Title of article :
Comprehensive two-dimensional gas chromatography in the screening of persistent organohalogenated pollutants in environmental samples
Author/Authors :
Bordajandi، نويسنده , , L.R. and Ramos، نويسنده , , J.J. and Sanz-Argent، نويسنده , , J. and Gonzلlez، نويسنده , , M.J. and Ramos، نويسنده , , L.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
13
From page :
312
To page :
324
Abstract :
Separations of eight persistent organohalogenated classes of pollutants, organochlorinated pesticides (OCPs), polychlorinated biphenyls (PCBs), polychlorinated diphenyl ethers (PBDEs), polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polychlorinated naphthalenes (PCNs), polychlorinated terphenyls (PCTs) and toxaphene (CTT) by comprehensive two-dimensional gas chromatography (GC × GC) were evaluated. Columns with different polarity and selectivity, including ZB-5, HT-8, DB-17 and BP-10, were selected as first dimension and combined with columns of increasing polarity in the second dimension, i.e. HT-8, BPX-50 and Carbowax (or Supelcowax-10). In total nine column combinations were tested. Because the main interest of the study was fast screening of the test xenobiotic families in complex matrices, in all cases, attention was primarily focussed on group-type separation. Nevertheless, within-group separation was also considered, especially for those classes containing particularly toxic congeners, such as PCBs and PCDD/Fs. Although none of the assayed column sets allowed the simultaneous and complete separation of all pollutants classes, some column combinations provided satisfactory separations among selected families and the rest of pollutants investigated. That was, for instance, the case of HT-8 × BPX-50 for PBDEs and PCDD/Fs, DB-17 × HT-8 for PCNs and OCPs and BP-10 × BPX-50 for CTT, PCDD/Fs and PBDEs. The feasibility of the proposed approach for the fast screening of the target classes of pollutants in complex samples was illustrated by the analysis of food and marine fat samples prepared using simplified miniaturised sample treatment methods.
Keywords :
Poly , Comprehensive two-dimensional gas chromatography , Organochlorine pollutants , Organobromine pollutants , Polychlorinated biphenyls , Organohalogenated pesticides , Polychlorinated diphenyl ethers , Polychlorinated dibenzo-p-dioxins , polychlorinated dibenzofurans
Journal title :
Journal of Chromatography A
Serial Year :
2008
Journal title :
Journal of Chromatography A
Record number :
1510599
Link To Document :
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