|
“Chemical composition of riverine suspended matter and sediments from the Indian sub-continent”. Dekov V, Subramanian V, Van Grieken R, Mitteilungen aus dem Geologisch-Paläontologischen Institut der Universität Hamburg 82, 99 (1999)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Composition and size of individual particles from a gold mine atmosphere”. Annegarn HJ, Storms H, Van Grieken RE, Booth-Jones PA, Mining science &, technology 5, 111 (1987). http://doi.org/10.1016/S0167-9031(87)90345-8
Abstract: Airborne dust particles were collected in a return airway of a South African gold mine using a 7-stage, single-orifice cascade impactor. Between 70 and 130 individual particles were analysed on each stage using automated electron-probe x-ray microanalysis (EPXMA). Particle size and shape parameters are given for different classes of particles sorted by elemental composition. Silicon-rich particles are the most abundant overall, while chlorine-rich particles dominate (up to 80%) in the range 0.21.0 μm. It is shown that EPXMA characterisation of particles can be used to infer relative contributions of various particle sources and dust generating processes to the total dust concentrations in mine atmospheres. An understanding of the nature and source of particles is essential for any source control strategy. We conclude that the EPXMA technique merits inclusion in the repertoire of techniques used for characterising underground dust.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1016/S0167-9031(87)90345-8
|
|
|
“Concentration trends and sources of polycyclic aromatic hydrocarbons (PAHs) in Belgium”. Ravindra K, Bencs L, Wauters E, de Hoog J, Deutsch F, Roekens E, Bleux N, Berghmans P, Van Grieken R, IASTA bulletin 17, 98 (2005)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Corrosive marine atmosphere investigations in Tanzania: exposure sites and preliminary results”. Mmari AG, Potgieter-Vermaak SS, Uiso CBS, Makundi IN, Potgieter JH, Van Grieken R, Newsletter of the International Global Atmospheric Chemistry Project , 13 (2007)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Determination of BTEX by GCMS in air of offset printing plants: comparison between conventional and ecological inks”. Godoi AFL, Sawada EY, de Marchi MRR, Van Grieken R, Godoi RHM, Water, air, and soil pollution : focus 9, 163 (2009). http://doi.org/10.1007/S11267-009-9219-9
Abstract: The use of inks containing organic solvents by the offset printing process implies in the release of volatile organic compounds to the work environment. Many of these compounds such as benzene, toluene, ethylbenzene, and the xylene isomers (well known by the acronym BTEX) are extremely toxic. In this study, the BTEX concentrations were determined in two different printing plants that use distinct types of inks: the conventional and the so-called ecological, which is manufactured based on vegetal oil. Concentration ranges were 4384, 153,480, 2133, 5459, and 2236 μg m−3 for benzene, toluene, ethylbenzene, m + p-xylene, and o-xylene, respectively, for the conventional printing plant. At the ecological printing plant, concentration ranges were below limit of detection (<LD)-31, <LD-618, <LD-1,690, <LD-10,500, <LD-3,360 μg m−3 for benzene, toluene, ethylbenzene, m + p-xylene, and o-xylene, respectively. BTEX concentrations are lower at the ecological printing environment than in the conventional, where mineral oil-based inks are used. However, the worker who cleans the printing matrices is exposed to high concentrations of ethylbenzene and xylenes, due probably to the cleaning products composition (containing high amounts of BTEX). Although the BTEX concentrations found in both printing work environments were below the limits considered by the Brazilian Law for Activities and Unhealthy Operations (NR-15), the exposure to such vapors characterizes risk to the workers health for some of the evaluated samples, mainly the personal ones.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/S11267-009-9219-9
|
|
|
“Distribution and composition of suspended matter around Sumbawa Island, Indonesia”. Eisma D, van Put A, Van Grieken R, Mitteilungen aus dem Geologisch-Paläontologischen Institut der Universität Hamburg 70, 137 (1992)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Effects of air pollution on historic buildings and monuments (1986-1990): scientific basis for conservation: analytical study of the weathering of building stones under field-exposure conditions”. Van Grieken R, Vleugels G, Sweevers E, Dewolfs R, European cultural heritage newsletter on research 8, 2 (1994)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Elemental constituents of atmospheric aerosols in Recife, North-East Brazil”. Van Grieken R, Van 't dack L, Costa Dantas C, Moura de Amorim W, Maenhaut W, Environmental pollution: series B : chemical and physical 4, 143 (1982). http://doi.org/10.1016/0143-148X(82)90025-8
Abstract: Few data are available on the inorganic atmospheric pollution in the rapidly expanding cities of South America, like Recife, on the Atlantic Coast of North-east Brazil. Therefore, the elemental composition of atmospheric aerosols was investigated for nine sites in the Recife conurbation and a fairly remote site in the area. Total aerosol samples were collected on cellulose filters for analysis by energy dispersive X-ray fluorescence and cascade impactors were used to collect the aerosols as a function of particle size for subsequent analysis by proton-induced X-ray emission. Local soil aliquots were also analysed. About eighteen elements were quantified in all cases. The average total atmospheric concentrations appeared to be well above natural levels but usually lower than, or comparable with, those of North American and European cities. Dispersal of sea spray and of local soil (often contaminated with, for example, Cu, Zn and Pb from industrial sources) contributes predominantly to the total atmospheric load in Recife. However, the particle size fraction results also indicated strong excesses in the small particle mode for S, K, V, Mn, Ni, Cu, Zn, Br and Pb, mainly in the downtown area. Again, the corresponding enrichment factors were only moderate in comparison with other published urban data.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1016/0143-148X(82)90025-8
|
|
|
“Energy-dispersive X-ray spectrometry : present state and trends”. Van Grieken R, Markowicz A, Török S, Fresenius' Zeitschrift für analytische Chemie 324, 825 (1986). http://doi.org/10.1007/BF00473177
Abstract: Recent development, present state and expected future developments in energy-dispersive X-ray spectrometry are discussed. Attention is paid to the improvements in analytical selectivity, sensitivity, detection limit, quantitative character and applicability range, which are the result of new or better excitation sources, detectors, instrument design, automation, computer software and theoretical developments.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/BF00473177
|
|
|
“Geometry errors in 14 MeV neutron activation analysis”. Van Grieken R, Speecke A, Hoste J, Journal of radioanalytical chemistry 13, 225 (1973). http://doi.org/10.1007/BF02514126
Abstract: The effects of inaccurate sample sizes and sample positioning on 14 MeV neutron activation analysis results are estimated for 30, 20 and 10 mm diameter targets. It appears that axial positioning is the most critical parameter and that using a larger tritium target will yield an overall improvement of the reproducibility.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/BF02514126
|
|
|
“The half-life of 28Al”. Van Schandevijl R, Van Grieken R, Hoste J, Journal of radioanalytical chemistry 9, 55 (1971). http://doi.org/10.1007/BF02514012
Abstract: The half-life of28Al was redetermined on aluminium samples of different origin. Three different counting techniques were applied. The availability of highly purified samples (up to 99.9999%), the use of very fast electronic counting equipment and a complete automatisation allowed a good precision to be obtained in the final result of 2.2405 min.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/BF02514012
|
|
|
“Health risk assessment of urban suspended particulate matter with special reference to polycyclic aromatic hydrocarbons: a review”. Ravindra K, Mittal AK, Van Grieken R, Reviews on environmnetal health 16, 169 (2001)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Indoor air quality assessment of elementary schools in Curitiba, Brazil”. Godoi RHM, Avigo D, Campos VD, Tavares TM, de Marchi MRR, Van Grieken R, Godoi AFL, Water, air, and soil pollution : focus 9, 171 (2009). http://doi.org/10.1007/S11267-009-9220-3
Abstract: The promotion of good indoor air quality in schools is of particular public concern for two main reasons: (1) school-age children spend at least 30% of their time inside classrooms and (2) indoor air quality in urban areas is substantially influenced by the outdoor pollutants, exposing tenants to potentially toxic substances. Two schools in Curitiba, Brazil, were selected to characterize the gaseous compounds indoor and outdoor of the classrooms. The concentrations of benzene, toluene, ethylbenzene, and the isomers xylenes (BTEX); NO2; SO2; O3; acetic acid (HAc); and formic acid (HFor) were assessed using passive diffusion tubes. BTEX were analyzed by gas chromatographyion trap mass spectrometry and other collected gasses by ion chromatography. The concentration of NO2 varied between 9.5 and 23 µg m−3, whereas SO2 showed an interval from 0.1 to 4.8 µg m−3. Within the schools, BTEX concentrations were predominant. Formic and acetic acids inside the classrooms revealed intermediate concentrations of 1.5 µg m−3 and 1.2 µg m−3, respectively.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/S11267-009-9220-3
|
|
|
“Kultuurpatrimonium, zure regen en energie”. Van Grieken R, Fobe B, Energie en milieu: tijdschrift over energie en leefmilieu , 10 (1990)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Laser microprobe mass analysis : a review of applications in the life sciences”. Verbueken AH, Bruynseels FJ, Van Grieken RE, Biomedical mass spectrometry 12, 438 (1985). http://doi.org/10.1002/BMS.1200120903
Abstract: The characteristics and analytical utility of laser microprobe mass analysis (LAMMA) are described and evaluated, and a short history of this recent microanalytical technique is presented. A review of the areas of application of LAMMA and related laser microprobes is presented with special emphasis on applications in the life sciences.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1002/BMS.1200120903
|
|
|
“Localization of lead in cultured tooth germs by laser microprobe micro-analysis”. Ameloot PC, Vandeputte DF, Van Grieken RE, Coomans D, Proceedings of the Finnish Dental Society 83, 225 (1987)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Loss of particulate organic matter in estuaries as exemplified by the Ems and Gironde estuaries”. Eisma D, Bernard P, Boon JJ, Van Grieken R, Kalf J, Mook WG, Mitteilungen aus dem Geologisch-Paläontologischen Institut der Universität Hamburg 58, 397 (1985)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Main conclusions from VIDRIO EU research programme on the determination of conditions to prevent weathering of ancient stained glass windows and recommendations for end-users and practitioners”. Pallot-Frossard I, Bernardi A, Van Grieken R, Rölleke S, Verità, M, Rivista della Stazione sperimentale del vetro , 75 (2005)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Materiaaltransfer van de oceaan naar de atmosfeer”. Van Grieken R, Mededelingen en informatie , 15 (1976)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Matrix effects and analysis of biological material by spark source mass spectrometry”. Vos L, Van Grieken R, Fresenius' Zeitschrift für analytische Chemie 321, 32 (1985). http://doi.org/10.1007/BF00464483
Abstract: Spark-source mass spectrometric analyses of synthetic simulated biological samples were performed to determine the importance of matrix effects. A correlation between the variation of the relative sensitivity coefficients (RSC's) and the spark plasma composition, hence plasma temperature, was found. The determined RSC's were used in the analysis of four biological standard reference materials. An accuracy of 1013% and detection limits between 0.005 and 0.5 ppm were obtained during analysis under normal conditions.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/BF00464483
|
|
|
“A message in the dust”. Jambers W, Van Grieken R, Analysis Europe , 25 (1996)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Micro-determination of zirconium-hafnium ratios in zircons by proton induced X-ray emission”. Van Grieken RE, Johansson TB, Winchester JW, Odom L, Fresenius' Zeitschrift für analytische Chemie 275, 343 (1975). http://doi.org/10.1007/BF00437765
Abstract: The zirconium/hafnium ratios of zircons are determined using proton induced X-ray emission. Submilligram samples, imbedded in a starch layer and deposited on a 50 μg/cm2 polystyrene carrier, are irradiated for 1020 min with a 5 nA beam of 3.7 MeV protons, while the Hf-Lβ and Zr-Kα X-rays are counted with a Si(Li) detector. The standard deviation per analysis is in the 36 % range. Only few interferences are possible. To eliminate errors due to absorption effects the zircon layer thickness should be above 40 μm or reproducibly thin samples should be employed. Measuring the Hf-Lβ/Hf-Lα ratio for samples and standards might provide a practical check for the absence of absorption errors. The sensitivity is so favourable that, in practice, the minimal sample size is only limited by the minimal amount that can be handled properly.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/BF00437765
|
|
|
“On the impact of precipitation amount on the concentration of elements and ions in urban aerosol particles”. Deutsch F, Stranger M, Kaplinskii AE, Samek L, Joos P, Van Grieken R, Atmospheric and oceanic optics 16, 850 (2003)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Oszklenie ochronne i jego wpływ na średniowieczne okna witrazowe: z perspektywy chemii atmosfery: studium przypadku kaplica Sainte Chapelle w Paryzu”. Kontozova V, Godoi R, Krata A, Van Grieken R, Analityka , 20 (2007)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Overview of most commonly used analytical techniques for elemental analysis”. Margui E, Van Grieken R, Petro Industry News , 8 (2014)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Perspectieven voor energie-dispersieve X-stralen fluorescentie bij de wateranalyse”. Vanderborght B, Van Grieken R, Hydrographica 1, 19 (1975)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Radiochemical study of Cd, Co and Eu-coprecititation with iron hydroxide in seawater”. Chakravorty R, Van Grieken R, Mikrochimica acta 3, 81 (1986)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Siberian Haze: complex study of aerosols in Siberia”. Koutsenogii PK, van Malderen H, Hoornaert S, Van Grieken R, Koutsenogii KP, Boufetov N, Makarov VI, Smoljakov BS, Nemirovski AM, Osipova LP, Krjukov JA, Ivakin EA, Posukh OL, Bronstein EL, Optics of the atmosphere and ocean 9, 712 (1996)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|
|
“Simultaneous determination of silicon and phosphorus in cast iron by 14 MeV neutron activation analysis”. Van Grieken R, Speecke A, Hoste J, Journal of radioanalytical chemistry 6, 385 (1970). http://doi.org/10.1007/BF02513966
Abstract: A fast (10 min), non-destructive simultaneous determination of silicon and phosphorus in cast iron and steel by 14 MeV neutron activation was developed. The 1.78 MeV28Al activity (T=2.24 min) induced by the reaction28Si(n, p)28Al is counted on a NaI(Tl) detector. Two measurements are made to correct for the 1.81 MeV56Mn activity (T=2.58 hr) from the iron matrix. However,28Al is also produced via31P(n, α)28Al. By (n, 2n) reaction, phosphorus yields also30P (T=2.6 min), the 0.511 MeV annihilation radiation of which is counted by two opposite NaI(Tl) detectors in coincidence. Again, two successive coincidence measurements are carried out in order to take into account the53Fe activity (β+; T=8.9 min) from54Fe(n, 2n)53Fe. The28Al measurement is appropriately corrected via the computed phosphorus content. An oxygen flux monitor was used to normalize to the same flux. Nuclear interferences have been examined. Special attention has been paid to the presence of copper. The standard deviation for phosphorus being as high as ca. 0.09% P for a single determination, this technique can only be practical as an independent phosphorus analysis for high phosphorus cast irons. The precision on the28Al measurement is 5% relative for 0.2% Si and 2.5% above 1% Si.
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1007/BF02513966
|
|
|
“Single particle analysis of Hungarian background aerosol”. Török S, Sandor S, Xhoffer C, Van Grieken R, Meszaros E, Molnar A, Idojaras: quarterly journal of the Hungarian Meteorological Service 96, 223 (1992)
Keywords: A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
|
|