Simultaneous quantification of polar and non-polar volatile organic compounds in water samples by direct aqueous injection-gas chromatography/mass spectrometry

Journal of Chromatography. a
Christoph AeppliRené P Schwarzenbach

Abstract

A direct aqueous injection-gas chromatography/mass spectrometry (DAI-GC/MS) method for trace analysis of 24 volatile organic compounds (VOCs) in water samples is presented. The method allows for the simultaneous quantification of benzene, toluene, ethyl benzene, and xylenes (BTEX), methyl tert-butyl ether (MTBE), tert-butyl alcohol (TBA), as well as a variety of chlorinated methanes, ethanes, propane, enthenes and benzenes. Applying a liquid film polyethylene glycol or a porous layer open tubular (PLOT) divinylbenzene GC capillary column to separate the water from the VOCs, volumes of 1-10 microL aqueous sample are directly injected into the GC. No enrichment or pretreatment steps are required and sample volumes as low as 100 microL are sufficient for accurate quantification. Method detection limits determined in natural groundwater samples were between 0.07 and 2.8 microg/L and instrument detection limits of <5 pg were achieved for 21 out of the 24 evaluated VOCs. DAI-GC/MS offers both good accuracy and precision (relative standard deviations <or=10%). The versatility of our method is demonstrated for contaminant quantification in drinking water disinfection (advanced oxidation of MTBE) and for VOC concentration measurements i...Continue Reading

Citations

Apr 9, 2010·Analytical and Bioanalytical Chemistry·W ZiemerW Kerl
Feb 1, 2011·Analytical and Bioanalytical Chemistry·Marek Tobiszewski, Jacek Namieśnik
Jul 9, 2011·Environmental Science and Pollution Research International·Hsin-Wang LiuKong-Hwa Chiu
Oct 23, 2008·Analytica Chimica Acta·José Luis Pérez PavónBernardo Moreno Cordero
May 15, 2015·Journal of Experimental Botany·B NiederbacherJ P Schnitzler
Apr 17, 2012·Analytica Chimica Acta·Saied Saeed Hosseiny DavaraniMohammad-Ali Tabatabaei
Apr 15, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Alshymaa A Aly, Tadeusz Górecki
Jan 7, 2021·Environmental Science and Pollution Research International·Gisela de Assis MartiniJosé Roberto Rogero
Dec 1, 2009·Environmental Science & Technology·Christoph AeppliThomas B Hofstetter

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