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Author Padilla, R.; van Espen, P.; Abrahantes, A.; Janssens, K.
Title Semiempirical approach for standardless calibration in µ-XRF spectrometry using capillary lenses Type A1 Journal article
Year 2005 Publication X-ray spectrometry Abbreviated Journal X-Ray Spectrom
Volume 34 Issue 1 Pages 19-27
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000226260800004 Publication Date 2004-09-14
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0049-8246 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.298 Times cited 23 Open Access
Notes Approved Most recent IF: 1.298; 2005 IF: 1.372
Call Number UA @ admin @ c:irua:52230 Serial 5828
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Author Cabal, A.; Legrand, S.; Van den Bril, B.; Tote, K.; Janssens, K.; van Espen, P.
Title Study of the uniformity of aerosol filters by scanning MA-XRF Type A1 Journal article
Year 2017 Publication X-ray spectrometry T2 – 17th European Conference on X-Ray Spectrometry (EXRS), JUN 19-24, 2016, Univ Gothenburg, Univ Gothenburg, Gothenburg, SWEDEN Abbreviated Journal X-Ray Spectrom
Volume 46 Issue 5 Pages 461-466
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract Energy-dispersive X-ray fluorescence (XRF) is an attractive analytical method to determine the level of air pollution by heavy metals. The concentration of the filter in ng/cm(2) is obtained by direct comparison of the net characteristic line intensity of an element with that of a thin film standard. As the sampled area on the filter and the area of the standard are larger than the area analysed by the instrument, the distribution of the elements on the surface of both samples and standards have to be sufficiently uniform. If this is not the case, biased concentration estimates are obtained. Two scanning macro-XRF setups with a beam diameter of similar to 0.5 mm were used to investigate the distribution of elements in (1) commercially available (Micromatter) standards, (2) in-house quartz filter standards obtained with an aerosol generator and (3) particulatematter (PM10) collected on quartz filters by a Leckel SEQ 47/50 sampler. The uniformity of the Micromatter standards was better than 2%. At least some in-house standards showed a concave distribution with less material at the edges. The maximum bias introduced by this is less than 5%. Because of the limited sensitivity of scanning XRF compared with conventional XRF, the distribution of only a few common elements like Ca and Fe could be determined reliably in aerosol filters. The distribution of some heavy elements could only be measured in filters sampled in polluted regions. In general, the loading of particulate matter over the filters was uniform. Copyright (C) 2017 John Wiley & Sons, Ltd.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000409246400026 Publication Date 2017-03-21
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0049-8246 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.298 Times cited 4 Open Access
Notes ; ; Approved Most recent IF: 1.298
Call Number UA @ admin @ c:irua:145644 Serial 5852
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Author Janssens, K.; Vittiglio, G.; Deraedt, I.; Aerts, A.; Vekemans, B.; Vincze, L.; Wei, F.; de Ryck, I.; Schalm, O.; Adams, F.; Rindby, A.; Knöchel, A.; Simionovici, A.S.; Snigirev, A.
Title Use of microscopic XRF for non-destructive analysis in art an archaeometry Type A1 Journal article
Year 2000 Publication X-ray spectrometry Abbreviated Journal X-Ray Spectrom
Volume 29 Issue Pages 73-91
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000085107800010 Publication Date 2002-08-25
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0049-8246 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.298 Times cited Open Access
Notes Approved Most recent IF: 1.298; 2000 IF: 1.478
Call Number UA @ admin @ c:irua:27561 Serial 5897
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Author Cagno, S.; van der Snickt, G.; Legrand, S.; Caen, J.; Patin, M.; Meulebroeck, W.; Dirkx, Y.; Hillen, M.; Steenackers, G.; Rousaki, A.; Vandenabeele, P.; Janssens, K.
Title Comparison of four mobile, non‐invasive diagnostic techniques for differentiating glass types in historical leaded windows : MA‐XRF , UV–Vis–NIR, Raman spectroscopy and IRT Type A1 Journal article
Year 2020 Publication X-Ray Spectrometry Abbreviated Journal X-Ray Spectrom
Volume Issue Pages xrs.3185-17
Keywords A1 Journal article; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES)
Abstract This paper critically compares the performance of four non-invasive techniques that match the accuracy, flexibility, time-efficiency, and transportability required for in situ characterization of leaded glass windows: macroscopic X-ray fluorescence imaging (MA-XRF), UV-Vis-NIR, Raman spectroscopy, and infrared thermography (IRT). In order to compare the techniques on equal grounds, all techniques were tested independently of each other by separate research groups on the same historical leaded window tentatively dated to the 17th century, without prior knowledge. The aim was to assess the ability of these techniques to document the conservation history of the window by classifying and grouping the colorless glass panes, based on differences in composition. IRT, MA-XRF and UV-Vis-NIR spectroscopy positively distinguished at least two glass groups, with MA-XRF providing the most detailed chemical information. In particular, based on the ratio between the network modifier (K) and network stabilizer (Ca) and on the level of colorants and decolorizers (Fe, Mn, As), the number of plausible glass families could be strongly reduced. In addition, UV-Vis-NIR detected cobalt at ppm level and gave more specific information on the chromophore Fe2+/Fe(3+)ratio. Raman spectroscopy was hampered by fluorescence caused by the metal ions of the decolorizer in most of the panes, but nevertheless identified one group as HLLA.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000561869600001 Publication Date 2020-08-24
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0049-8246 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.2 Times cited Open Access
Notes ; Belgian Federal Science Policy Office, Grant/Award Number: BR/175/A3/FENESTRA; Fonds Wetenschappelijk Onderzoek, Grant/Award Number: 12X1919N; Baillet-Latour Fund ; Approved Most recent IF: 1.2; 2020 IF: 1.298
Call Number UA @ admin @ c:irua:170972 Serial 6473
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Author Janssens, K.
Title EXRS2022 : the 2022 edition of the European X-ray Spectrometry conference, held in Bruges, Belgium Type Editorial
Year 2023 Publication X-ray spectrometry Abbreviated Journal
Volume 52 Issue 6 Pages 276-278
Keywords Editorial; Antwerp X-ray Imaging and Spectroscopy (AXIS)
Abstract
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 001043528400001 Publication Date 2023-08-07
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0049-8246 ISBN Additional Links UA library record; WoS full record
Impact Factor (down) 1.2 Times cited Open Access Not_Open_Access
Notes Approved Most recent IF: 1.2; 2023 IF: 1.298
Call Number UA @ admin @ c:irua:198217 Serial 8865
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Author Simionovici, A.S.; Chukalina, M.; Schroer, C.; Drakopoulos, M.; Snigirev, A.; Snigireva, I.; Lengeler, B.; Janssens, K.; Adams, F.
Title High-resolution X-ray fluorescence microtomography of homogeneous samples Type A1 Journal article
Year 2000 Publication IEEE transactions on nuclear science Abbreviated Journal Ieee T Nucl Sci
Volume 47 Issue 6 Pages 2736-2740
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000166992400006 Publication Date 2002-08-24
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0018-9499 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.171 Times cited Open Access
Notes Approved Most recent IF: 1.171; 2000 IF: 1.060
Call Number UA @ admin @ c:irua:32403 Serial 5644
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Author Janssens, K.L.; Partoens, B.; Peeters, F.M.
Title Type II quantum dots in magnetic fields: excitonic behaviour Type A1 Journal article
Year 2003 Publication Microelectronics journal Abbreviated Journal Microelectron J
Volume 34 Issue Pages 347-350
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Luton Editor
Language Wos 000183607400007 Publication Date 2003-04-23
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0026-2692; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.163 Times cited 1 Open Access
Notes Approved Most recent IF: 1.163; 2003 IF: 0.565
Call Number UA @ lucian @ c:irua:62450 Serial 3790
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Author de Nolf, W.; Janssens, K.
Title Micro X-ray diffraction and fluorescence tomography for the study of multilayered automotive paints Type A1 Journal article
Year 2010 Publication Surface and interface analysis Abbreviated Journal Surf Interface Anal
Volume 42 Issue 5 Pages 411-418
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract Combined microscopic X-ray fluorescence/microscopic X-ray diffraction (µ-XRF/µ-XRD) tomography is a recently developed method that allows the visualization of the distribution of chemical elements and the associated crystalline phases inside complex, heterogeneous materials of extended thickness (millimeter range) in a nondestructive fashion. In this paper, the accuracy and resolution with which the individual layers in a multilayer stack of automotive paints can be distinguished is evaluated, and some of their properties measured. A paint layer system of eight layers was investigated, in which eight different crystalline substances were identified, each layer consisting of an organic, synthetic resin doped with finely milled inorganic compounds that serve as pigments or to strengthen the layer. In the XRD tomograms, all paint layers could be straightforwardly distinguished and their average thickness calculated. In case the filtered back projection method was used for tomogram reconstruction, a spatial resolution comparable to the microbeam size was obtained indicating no significant reconstruction blurring. When a more robust reconstruction method, such as the maximum-likelihood expectation maximization method, was employed, tomograms showing fewer artifacts were obtained, but with a spatial resolution that was two times worse. In the corresponding XRF tomograms, significant self-absorption distorted the element-specific tomograms corresponding to the low-energy (<7 keV) characteristic radiation and limited their usefulness. It can be concluded that microbeam XRD tomography allows the accurate visualization of the distribution of crystalline phases in multilayered automotive paint materials of millimeter dimensions with sufficient resolution to allow separate characterization of each layer in terms of its crystal-phase composition and thickness.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000277350900012 Publication Date 2009-11-10
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0142-2421 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.132 Times cited 70 Open Access
Notes ; This research was supported by the Interuniversity Attraction Poles Programme-Belgian Science Policy (IUAP VI/16) and funded by beam time grants from HASYLAB. This paper also presents results from a GOA project of the Research Fund of the University of Antwerp (Belgium), and of FWO (Brussels, Belgium) project nos. G.0177.03, G.0103.04, and G.0689.06. We also would like to acknowledge the Institute of Forensic Research in Krakow, Poland, and in particular Dr J. Zieba for providing the paint layer sample. ; Approved Most recent IF: 1.132; 2010 IF: 1.249
Call Number UA @ admin @ c:irua:82764 Serial 5717
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Author Odin, G.P.; Vanmeert, F.; Janssens, K.; Lelièvre, H.; Mertz, J.-D.; Rouchon, V.
Title Accelerated ageing of shales of palaeontological interest : impact of temperature conditions Type A1 Journal article
Year 2014 Publication Annales de paléontologie Abbreviated Journal Ann Paleontol
Volume 100 Issue 2 Pages 137-149
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract The palaeontological collections of the Muséum national dHistoire naturelle (MNHN, Paris, France) and the Muséum dHistoire naturelle dAutun (MHNA, Autun, France) include many fossil specimens originating from the argillaceous shales of the Autun basin (Saône-et-Loire, France). These fossils are preserved within sedimentary rocks containing unstable sulphide compounds, such as pyrite, which may deteriorate in contact with water and oxygen. This alteration provokes crystalline efflorescence and cracks, thus compromising the preservations of the fossils. This work constitutes the first step of a project that aims to understand the mechanisms of alteration of these materials in order to define conservation guidelines for palaeontological collections. For this purpose, eight damaged specimens originating from the Permian Autun basin (Saône-et-Loire, France) were selected and analyzed by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy coupled to energy dispersive X-ray spectrometry (SEM/EDS) and X-ray absorption spectroscopy at the threshold of the sulphur Kα-edge (XANES). This methodology enabled the characterization of the matrices composition and the chemical nature of the alterations. Subsequently, we have sought to reproduce by artificial ageing the alteration phenomena encountered in the collections. New shale samples were collected on seven outcrops of the same Autun basin. They were analyzed and subjected to artificial ageing at 50% relative humidity (RH) and at temperatures ranging between 40 °C and 90 °C. Our work shows that damaged specimens and newly collected shale have a similar mineralogical composition. Yet the crystalline efflorescence material formed on the surface of damaged specimens belongs to the iron sulphate group whereas gypsum predominates on artificially aged shale samples. Reproducing the alterations observed on specimens by artificial ageing remains therefore problematic. Additionally, it appears that the temperature of ageing controls the nature of the damage: at 40 °C, many samples are mechanically damaged whereas no or minor crystalline efflorescence occurs. At 90 °C, it is the opposite tendency that is observed. Finally, mechanical damages do not seem to be correlated with the development of the efflorescence: samples with efflorescent crystals generally do not show clearly visible cracks; those that seem most fragmented do not show any visible efflorescence.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000338607500006 Publication Date 2014-01-24
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0753-3969 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.113 Times cited 5 Open Access
Notes ; This work is part of a PhD that is funded by the Museum national d'Histoire naturelle, Paris, France and was additionally supported via the S2-ART project (SDD programme of BELSPO, Brussels). The research was realized in partnership with the Palaeontological Collection Management Unit, Collection Department and with the Centre de Recherche sur la Paleodiversite et les Paleoenvironnements (CR2P, CNRS, UMR7207) of the Museum national d'Histoire naturelle, Paris, France. We are grateful to our colleagues MM. Jean Dejax and Dominique Chabard who provided palaeontological specimens and gave us access to shale deposits and Mrs Marie-Madeleine Blanc-Valleron who was of great help for the interpretation of the XRD data. ; Approved Most recent IF: 1.113; 2014 IF: 0.970
Call Number UA @ admin @ c:irua:116594 Serial 5456
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Author Odin, G.P.; Vanmeert, F.; Farges, F.; Gand, G.; Janssens, K.; Romero-Sarmiento, M.-F.; Steyer, J.S.; Vantelon, D.; Rouchon, V.
Title Alteration of fossil-bearing shale (Autun, France; Permian), part II : monitoring artificial and natural ageing by combined use of S and Ca K-edge XANES analysis, Rock-Eval pyrolysis and FTIR analysis Type A1 Journal article
Year 2015 Publication Annales de paléontologie Abbreviated Journal Ann Paleontol
Volume 101 Issue 3 Pages 225-239
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract Fossil-bearing shale specimens that include sulfides in their compositions are chemically reactive and sometimes also mechanically fragile. This decay is often related to iron sulfate efflorescence resulting from the oxidation of sulfide compounds. The processes underlying these degradations are poorly known, thus impeding the elaboration of curative or preventive treatments. The present contribution aims to identify the origin of museum specimen alterations. It focuses on the Flouest collection housed at the Museum National d'Histoire Naturelle (MNHN, Paris, France) and originating from the Autun Basin (Saone-et-Loire, France, Permian). To evaluate the alteration of MNHN specimens, it appeared necessary to compare their composition with that of unaltered shale so as to identify chemical changes occurring during ageing. Therefore, new material was collected in the Autun Basin, among others on the locality of Muse that corresponds to the same lithostratigraphic unit as that of the MNHN specimens. This material was, if necessary, artificially aged. The first part of this work, presented elsewhere, deals with the use of Xray diffraction and Mossbauer spectroscopy for characterizing iron reactivity and speciation. It leads to the conclusion that the reactivity of iron in the shale matrix was limited and could not account for the large efflorescence of iron (II) sulfate occurring nearby the fossil. The second part presented here focuses on the use of S K-edge X-ray Absorption Near Edge Structure (XANES) spectroscopy for characterizing sulfur speciation and reactivity. Measurements were performed on the shale matrix and on thin layers of maceral found in the proximity of damaged areas. As sulfur may be found in association with calcium or organic matter, complementary techniques were implemented, such as FTIR spectroscopy, Rock-Eval pyrolysis (characterization of organic matter content) and Ca K-edge XANES (analysis of calcium speciation) spectroscopy. It was shown that sulfur is mainly related to thioether, sulfoxide, iron sulfide, and sulfates whereas calcium is mainly bound to carboxylate, carbonate and/or sulfate groups. FTIR analysis of the macerals confirmed the presence of vitrinite on damaged MNHN specimens. The low oxygen content of new shale samples determined by Rock-Eval pyrolysis indicates that the organic matter is well preserved, despite the fact that samples come from outcrop surface. In the newly collected material, sulfur is mainly related to organic sulfides (thioether) with a minor occurrence of iron sulfide. In the shale fraction of damaged MNHN specimens, sulfur is mostly oxidized into a mixture of iron and calcium sulfate. However, in the vitrinite layers of the same specimens, a large proportion of sulfur corresponds to organic sulfides. Also the oxidation of sulfur does not occur homogeneously but preferentially in the shale fraction, probably because this latter is porous whereas vitrinite is not. Artificial ageing of new shale material showed that the oxidation of organic sulfides could be reproduced at 90 degrees C, 80% of relative humidity. However, the obtained efflorescence almost exclusively corresponds to calcium sulfate whereas iron (II) sulfates are mostly observed on MNHN specimens. The new material collected on site is probably to be questioned, and future studies will have to select new samples with fossil remains. This will be the object of the third part of this work. (C) 2015 Elsevier Masson SAS. All rights reserved.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000363821700009 Publication Date 2015-05-09
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0753-3969 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.113 Times cited 6 Open Access
Notes ; This work was conducted within a PhD work that was supported by a doctoral school grant of the Museum national d'Histoire naturelle, Paris, France. We acknowledge SOLEIL for provision of synchrotron radiation facilities (Proposals ID “20130462” and “20110189”) and we would like to thank Nicolas Trcera, Pierre Lagarde and Anne Marie Flanck for assistance in using beamline LUCIA. ; Approved Most recent IF: 1.113; 2015 IF: 0.970
Call Number UA @ admin @ c:irua:129523 Serial 5462
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Author van der Linden, V.; Bultinck, E.; de Ruytter, J.; Schalm, O.; Janssens, K.; Devos, W.; Tiri, W.
Title Compositional analysis of 17-18th century archaeological glass fragments, excavated in Mechelen, Belgium: comparison with data from neighboring cities in the Low Countries Type A1 Journal article
Year 2005 Publication Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms Abbreviated Journal Nucl Instrum Meth B
Volume 239 Issue 1/2 Pages 100-106
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Amsterdam Editor
Language Wos 000233514700013 Publication Date 2005-08-19
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-583X; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.109 Times cited 15 Open Access
Notes Approved Most recent IF: 1.109; 2005 IF: 1.181
Call Number UA @ lucian @ c:irua:56068 Serial 444
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Author Šmit, Ž.; Janssens, K.; Proost, K.; Langus, I.
Title Confocal μ-XRF depth analysis of paint layers Type A1 Journal article
Year 2004 Publication Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms Abbreviated Journal Nucl Instrum Meth B
Volume 219 Issue Pages 35-40
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract Focused narrow-band beam of the synchrotron radiation was used for in-depth analysis of historic and modern paint layers. The fluorescent radiation induced by 21 keV impact radiation was detected by a Si(Li) detector equipped with a polycapillary X-ray lens in con-focal geometry. Scanning of the sample was performed by a motorized xyz stage. Space resolution of 30 ìm was achieved. The procedure of evaluation of concentrations was based on the independent parameter method and included absorption of radiation in the outer layers and secondary fluorescence enhancement induced by hard X-rays of the same and neighboring layers.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000221895800009 Publication Date 2004-02-21
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-583x ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.109 Times cited 69 Open Access
Notes Approved Most recent IF: 1.109; 2004 IF: 0.997
Call Number UA @ admin @ c:irua:71386 Serial 5552
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Author Proost, K.; Janssens, K.; Wagner, B.; Bulska, E.; Schreiner, M.
Title Determination of localized Fe2+/Fe3+ ratios in inks of historic documents by means of \mu-XANES Type A1 Journal article
Year 2004 Publication Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms Abbreviated Journal Nucl Instrum Meth B
Volume 213 Issue Pages 723-728
Keywords A1 Journal article; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract An important part of the European cultural heritage is composed of hand-written documents. Many of these documents were drawn up with iron-gall ink. This type of ink present a serious conservation problem, as it slowly oxidizes ('burns') the paper it is written on, thereby gradually disintegrating the historic document. Acid hydrolysis of the cellulose and/or the oxidation of organic compounds promoted by radical intermediates that are formed due to the presence of Fe2+ ions are considered to be the cause of the disintegration. mu-XANES measurements were performed with a lateral resolution of 30-50 mum in order to determine the local Fe2+/Fe3+ ratio in 19th C. documents from the Austrian National Archives and fragments of 16th C documents from the Polish National Library. In the 19th C documents, no significant amount of Fe2+ was detected. On the other hand, in the 16th C fragments, significant amounts of Fe2+ and appreciable differences in distribution of Fe2+ and Fe3+ within individual letters/ink stains were observed. (C) 2003 Elsevier B.V. All rights reserved.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000187020700144 Publication Date 2003-06-30
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-583x ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.109 Times cited Open Access
Notes Approved Most recent IF: 1.109; 2004 IF: 0.997
Call Number UA @ admin @ c:irua:45378 Serial 5573
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Author Rindby, A.; Engström, P.; Janssens, K.; Osán, J.
Title Micro-distribution of heavy elements in highly inhomogeneous particles generated from μ-beam XRF/XRD analysis Type A1 Journal article
Year 1997 Publication Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms Abbreviated Journal Nucl Instrum Meth B
Volume 124 Issue Pages 591-604
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos Publication Date
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-583x ISBN Additional Links UA library record
Impact Factor (down) 1.109 Times cited Open Access
Notes Approved Most recent IF: 1.109; 1997 IF: 1.016
Call Number UA @ admin @ c:irua:21715 Serial 5712
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Author Šmit, Ž.; Bulska, E.; Janssens, K.; Bulska, E.; Wagner, B.; Kos, M.; Lazar, I.
Title Trace element fingerprinting of façon-de-Venise glass Type A1 Journal article
Year 2005 Publication Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms Abbreviated Journal Nucl Instrum Meth B
Volume 239 Issue 1/2 Pages 94-99
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000233514700012 Publication Date 2005-08-11
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-583x ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 1.109 Times cited 27 Open Access
Notes Approved Most recent IF: 1.109; 2005 IF: 1.181
Call Number UA @ admin @ c:irua:56067 Serial 5879
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Author Cagno, S.; Cosyns, P.; Ceglia, A.; Nys, K.; Janssens, K.
Title The use of vitrum obsianum in the Roman Empire: some new insights and future prospects Type A1 Journal article
Year 2015 Publication Periodico di mineralogia Abbreviated Journal Period Mineral
Volume 84 Issue 3a Pages 465-482
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract The research on the use of obsidian in the Mediterranean is extensive but concerns almost exclusively volcanic glass from prehistoric and Bronze Age contexts. The consumption of obsidian during the Roman imperial period, however, has only occasionally received attention. Never a comprehensive account on what the Romans made in vitrum obsianum has been set up, nor have the sources exploited by them been examined. This paper provides a concise overview of the current knowledge on obsidian during the Roman imperial period and offers an introductory outline on potential research. The ancient writers inform us about the use of volcanic glass to create exclusive vessels, gemstones, mirrors and sculpture, but also about the creation of black appearing man-made glass initiated as a cheap and easier workable substitute of obsidian. The archaeological data on the other hand propose a more complex story with the occurrence of obsidian chunks in early Roman secondary glass workshops, and the bulky use of obsidian in late Antiquity to produce tesserae for the creation of wall and vault mosaics. Because it is extremely difficult to visually distinguish natural obsidian from man-made glass imitations we present in this paper data collected by means of non-destructive chemico-physical analyses SEM-EDX, portable X-ray fluorescence (p-XRF) and Raman spectroscopy to easily distinguish man-made glass from natural obsidian. In particular the use of portable instruments makes possible in situ analysis of objects in archaeological depots or museum collections to help defining distribution networks to better understand the shifting consumption patterns in Antiquity.
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Publisher Place of Publication Editor
Language Wos 000365632500007 Publication Date
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0369-8963 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 0.883 Times cited 2 Open Access
Notes ; Our sincere gratitude goes to Cecile Evers and Natacha Masar to have granted permission for studying and analysing various obsidian artefacts within the collections of the Royal Museums of Art and History, Brussels (Belgium). We are also very grateful to Roald Doctor, Daniele Foy and Laudine Robin, respectively for having provided the material from Carthage, for the Sidi Jdidi tessera and Lyon. Our appreciation also goes to Ian Freestone and Andrew Meek respectively for having worked out and provided the internal report on the horse foreleg in the British Museum. Finally we wish to thank Jennifer Price, Maria Grazia Diani respectively for the information on the Stanwick fragment and the piece in the Pogliaghi-Varesse collection. This research was supported by the Hercules Foundation (Brussels) with the grant AUHA09004 and FWO (Brussels, Belgium) projects no. G.0C12.13 and G.01769.09 and partly by the Research Council of Norway through its Centres of Excellence funding scheme, project number 223268/ F50. ; Approved Most recent IF: 0.883; 2015 IF: 0.464
Call Number UA @ admin @ c:irua:130244 Serial 5876
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Author Kirchner, E.; van der Lans, I.; Ligterink, F.; Geldof, M.; Gaibor, A.N.P.; Hendriks, E.; Janssens, K.; Delaney, J.
Title Digitally reconstructing Van Gogh's Field with Irises near Arles. Part 2: Pigment concentration maps Type A1 Journal article
Year 2018 Publication Color research and application Abbreviated Journal Color Res Appl
Volume 43 Issue 2 Pages 158-176
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract Colors in many paintings of great art historical value have changed over time, due to the combined effects of natural ageing, accumulated surface grime, and materials added during later conservation treatments. The physical restoration of the colors in such paintings is not possible. This article describes one part of work done to digitally restore the colors of Van Gogh's painting Field with Irises near Arles, dating from May 1888. We have used multispectral reflectance data to estimate absorption K and backscattering S parameters of Kubelka-Munk 2-constant theory. This was done for all 13 pigments known to have been used by Van Gogh in this painting, and based on this the concentration maps for each of these pigments were calculated. We validated the calculated concentration maps in several ways. For some pigments, we were able to predict spots on the painting where the pigment is expected to occur in unmixed form based on visual examination. For several other pigments, the concentration maps could be shown to agree with XRF data. Finally, for some other pigments the concentration maps were supported by additional evidence from microscopic examinations, remarks in Van Gogh's letters and from early color reproductions. For the 1.7 million pixels for which multispectral data is available, the average color difference between the calculated and measured spectral reflectance curves is CIEDE2000 = 1.05. This further confirms that the Kubelka-Munk calculations are well suited to describe the variety of spectral reflectance on the painting.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000424763100003 Publication Date 2017-08-25
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0361-2317 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 0.798 Times cited 4 Open Access
Notes ; Netherlands Organisation for Scientific Research, Grant/Award Number: 323.54.004; GOA project SolarPaint of the University of Antwerp Research Council and from the Fund Baillet Latour (Brussels) ; Approved Most recent IF: 0.798
Call Number UA @ admin @ c:irua:149231 Serial 5576
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Author van der Snickt, G.; Schalm, O.; Caen, J.; Janssens, K.; Schreiner, M.
Title Blue enamel on sixteenth- and seventeenth-century window glass : deterioration, microstructure, composition and preparation Type A1 Journal article
Year 2006 Publication Studies in conservation Abbreviated Journal Stud Conserv
Volume 51 Issue Pages 212-222
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000241941100006 Publication Date 2014-01-09
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0039-3630; 2047-0584 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 0.578 Times cited 8 Open Access
Notes Approved Most recent IF: 0.578; 2006 IF: 0.609
Call Number UA @ admin @ c:irua:60712 Serial 5492
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Author Schalm, O.; Caen, J.; Janssens, K.
Title Homogeneity, composition and deterioration of window glass fragments and paint layers from two seventeenth-century stained glass windows created by Jan de Caumont (similar to 1580-1659) Type A1 Journal article
Year 2010 Publication Studies in conservation Abbreviated Journal Stud Conserv
Volume 55 Issue 3 Pages 216-226
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000285283600009 Publication Date 2014-01-09
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0039-3630; 2047-0584 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 0.578 Times cited 2 Open Access
Notes ; ; Approved Most recent IF: 0.578; 2010 IF: 0.605
Call Number UA @ admin @ c:irua:85835 Serial 5645
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Author Cotte, M.; Checroun, E.; De Nolf, W.; Taniguchi, Y.; De Viguerie, L.; Burghammer, M.; Walter, P.; Rivard, C.; Salome, M.; Janssens, K.; Susini, J.
Title Lead soaps in paintings : friends or foes? Type A1 Journal article
Year 2017 Publication Studies in conservation Abbreviated Journal Stud Conserv
Volume 62 Issue 1 Pages 2-23
Keywords A1 Journal article; Art; History; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract The origin(s) and role(s) of metal soaps in paints are a worldwide concern today. These hybrid compounds, containing both fatty acid chains and metals associated with a carboxylate function, are increasingly identified in paints. As reviewed in the first part of this work, the presence of metal soaps in paints is differently interpreted in scientific publications: metal soaps are sometimes considered to play a positive role as anchor points, during paint drying processes; they can also be considered as responsible for many degradation processes (protrusions, efflorescences, darkening, etc.). Their origins are also interpreted in various ways. In some paintings (in particular from the twentieth century), they have sometimes introduced on purpose, as additives, to modify the physical properties of the painting materials. In older paintings, metal soaps are usually thought to result from an uncontrolled reaction of oil with lead-based pigments, in particular lead white, red lead, and lead tin yellow. In the second part of this work, the review of historical recipes of lead-based paint shows an important number of recipes based on controlled mixing of oil with lead driers. In the third part, the experimental reproduction of such traditional recipes using walnut oil and litharge (PbO) shows that lead soaps can be formed, both in about one hour at approximate to 100 degrees C, or in about one month at room temperature. It shows as well that after a few years, litharge is no longer detected in the paint medium, while different lead carbonates are. Finally, the micro-infrared spectroscopy and micro-X-ray diffraction re-analysis of protrusions from a nine-year model painting shows together with lead soaps, the presence of Pb-5(CO3)(3)(OH)(2)O ('synthetic plumbonacrite'), an unusual phase recently observed in a protrusion from a painting by Vincent Van Gogh. This work highlights (i) the multiple origins and roles of metal soaps in paints and (ii) the importance of combining the analysis of fragments from historical paintings with the analysis and reproduction of historical recipes. In particular, we show that the components detected today in historical paintings may severely differ from those originally used or prepared by the painter, complicating the assessment of the painter's intentions. More than the presence of metal soaps, the key questions to be tackled should be about their origins and (re)mobilization.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos 000393691200002 Publication Date 2016-10-03
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0039-3630; 2047-0584 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) 0.578 Times cited 26 Open Access
Notes ; This work was supported by the European Synchrotron Radiation Facility. ; Approved Most recent IF: 0.578
Call Number UA @ admin @ c:irua:141976 Serial 5690
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Author Kuckova, S.; Hamidi-Asl, E.; Matulkova, I.; Hynek, R.; De Wael, K.; Sanyova, J.; Janssens, K.
Title Technoques and applications of Surface-Enhanced Raman Scattering Spectroscopy (SERSS) focused on cultural heritage Type A1 Journal article
Year 2018 Publication Chemické listy Abbreviated Journal Chem Listy
Volume 112 Issue 5 Pages 312-316
Keywords A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract The review is devoted to a modern method of vibrational spectroscopy – surface enhanced Raman spectroscopy Its principle and some of its special variants (imunnoSERS and TERS (Tip-Enhanced Raman Spectroscopy)) are described m a simpinified manner Wide application possibilities are demonstrated on selected examples from its application m culturinl heritage.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos Publication Date
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0009-2770; 1213-7103 ISBN Additional Links UA library record; WoS full record
Impact Factor (down) 0.387 Times cited Open Access
Notes ; ; Approved Most recent IF: 0.387
Call Number UA @ admin @ c:irua:151616 Serial 5869
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Author Janssens, K.; Bogaerts, A.; van Grieken, R.
Title Colloquium Spectroscopicum Internationale 34: a collection of papers presented at the Colloquium Spectroscopicum Internationale, Antwerp, Belgium, 4-9 September 2005 Type ME3 Book as editor
Year 2006 Publication Abbreviated Journal
Volume Issue Pages
Keywords ME3 Book as editor; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher Elsevier Place of Publication Amsterdam Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Additional Links UA library record
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:61092 Serial 391
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Author Bogaerts, A.; Janssens, K.; van Grieken, R.
Title Colloquium Spectroscopicum Internationale 34 (CSI 34), Antwerp, Belgium, 4-9 September 2005 Type ME3 Book as editor
Year 2006 Publication Abbreviated Journal
Volume Issue Pages
Keywords ME3 Book as editor; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Abstract
Address
Corporate Author Thesis
Publisher Elsevier Place of Publication Amsterdam Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Additional Links UA library record
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:58858 Serial 394
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Author Caen, J.; Schalm, O.; van der Snickt, G.; van der Linden, V.; Frederickx, P.; Schryvers, D.; Janssens, K.; Cornelis, E.; van Dyck, D.; Schreiner, M.
Title Enamels in stained-glass windows : preparation, chemical composition, microstructure and causes of deterioration Type P3 Proceeding
Year 2005 Publication Abbreviated Journal
Volume Issue Pages 121-126
Keywords P3 Proceeding; Art; Electron microscopy for materials research (EMAT); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Vision lab
Abstract
Address
Corporate Author Thesis
Publisher Glassac Place of Publication Lisbon Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Additional Links UA library record
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:112025 Serial 1036
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Author Peeters, F.M.; Janssens, K.L.; Partoens, B.
Title Excitons in single and vertically coupled type II quantum dots in high magnetic fields Type H1 Book chapter
Year 2003 Publication Abbreviated Journal
Volume Issue Pages 117
Keywords H1 Book chapter; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication s.l. Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Additional Links UA library record; WoS full record;
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:62451 Serial 1129
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Author Peeters, F.M.; Tadić, M.; Janssens, K.L.; Partoens, B.
Title Hole band engineering in self-assembled quantum dots and molecules Type H1 Book chapter
Year 2004 Publication Abbreviated Journal
Volume Issue Pages 191-202
Keywords H1 Book chapter; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication s.l. Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Additional Links UA library record; WoS full record;
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:62454 Serial 1475
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Author Janssens, K.L.; Partoens, B.; Peeters, F.M.
Title Magneto-exciton in single and coupled type II quantum dots Type A1 Journal article
Year 2002 Publication Physica status solidi: A: applied research Abbreviated Journal Phys Status Solidi A
Volume 190 Issue 2 Pages 571-576
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Berlin Editor
Language Wos 000175623200048 Publication Date 2002-08-25
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0031-8965;1521-396X; ISBN Additional Links UA library record; WoS full record
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:62426 Serial 1899
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Author Fredrickx, P.; Schryvers, D.; Janssens, K.
Title Nanoscale morphology of a piece of ruby red Kunckel glass Type A1 Journal article
Year 2002 Publication Physics and chemistry of glasses Abbreviated Journal Phys Chem Glasses
Volume 43 Issue 4 Pages 176-183
Keywords A1 Journal article; Electron microscopy for materials research (EMAT); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Sheffield Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0031-9090 ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:40020 Serial 2268
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Author Janssens, K.L.; Partoens, B.; Peeters, F.M.
Title Single and coupled type II quantum dots in magnetic and electric fields Type A1 Journal article
Year 2002 Publication Physicalia magazine Abbreviated Journal
Volume 24 Issue Pages 211
Keywords A1 Journal article; Condensed Matter Theory (CMT)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Gent Editor
Language Wos Publication Date 0000-00-00
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0770-0520 ISBN Additional Links UA library record
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ lucian @ c:irua:62456 Serial 3016
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Author de Nolf, W.; Jaroszewicz, J.; Janssens, K.; Falkenberg, G.
Title 2θ-resolution obtainable during – XRPD experiments at Beamline L Type H3 Book chapter
Year 2008 Publication Abbreviated Journal
Volume Issue Pages 1655-1656
Keywords H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Wos Publication Date
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Additional Links UA library record
Impact Factor (down) Times cited Open Access
Notes Approved Most recent IF: NA
Call Number UA @ admin @ c:irua:74477 Serial 5447
Permanent link to this record