Individual determination of ortho and non-ortho substituted polychlorobiphenyls (PCBs) in sediments by high performance liquid chromatographic pre-separation and gas chromatography/ECD detection |
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| Authors: | R Fuoco M P Colombini E Samcova |
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| Institution: | (1) Istituto di Chimica Analitica Strumentale, CNR, Pisa, Italy;(2) Dipartimento di Chimica e Chimica Industriale Universita' di Pisa, Italy;(3) Department of Medical Chemistry and Toxicology, Charles University, Prague, Czechoslovakia |
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| Abstract: | Summary An analytical procedure for the individual determination of ortho and non-ortho PCB congeners in sediments, using high performance liquid chromatography (HPLC) preseparation and gas chromatography/ECD detection, is described. Gas chromatography/FTIR spectrometry (GC/FTIR) and gas chromatography/mass spectrometry (GC/MS) were employed for individual congener identification and determination. Sample extraction, clean-up of extract and selective elution procedures were optimized by using reference certified marine sediment samples. Recovery and precision were typically 83% and 16% respectively at 2 ng/g of total PCB content. The proposed procedure, tested by analyzing real sediment samples, showed a reproducibility better than 20% at 13 ng/g PCB level. |
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| Keywords: | Column liquid chromatography GC/ECD detection PCBs ortho and non-ortho Chromatographic separation Congener determination FTIR identification |
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