Quantification of PCBs in Environmental Samples: Comparison of Results Obtained with Different Analytical Instruments (GC—ECD, GC—MS) and Standards
作者： Bruno Pavon , Adriano Sfriso , Stefano Raccanelli
DOI: 10.1080/03067319108027534
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摘要: Abstract Polychlorinated biphenyls have been determined in sediments, macroalgae, mussels and worms sampled the lagoon of Venice, Italy. Sample preparation included hexane extraction, clean-up with sulphuric acid, Florisil copper separation from pesticides by column chromatography silica gel. Analyses were performed using methylsilicone phenyl-methylsilicone capillary columns. A GC—ECD a computer-assisted GC—MS performing selected ion monitoring (SIM) employed. Quantification was based on standards prepared combining Aroclor formulations mixtures different degree chlorination (7 PCB mix). Recovery tests conducted an internal standard added to samples before extraction yielded values between 79 102%. The precisions obtained quadruplicate combination HRGC—LRMS 7 mix 18% 15%, respectively. Imprecision mainly due uncertainties measuring a...
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