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\bibitem{Buczynska_etal2015} {\textquotedblleft}\textit{Optimization of sample clean-up for the GC-C-IRMS and GC-IT-MS analysis of PAHs from air particulate matter}{\textquotedblright}. Buczy{\'n}ska AJ, Geypens B, Van Grieken R, De Wael K, Microchemical journal \textbf{119}, 83 (2015).   http://doi.org/10.1016/J.MICROC.2014.10.009

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