STRUCTURE-DEPENDENT SEPARATION METHOD FOR NON-ORTHO PCBS WITH MATRIX-INTEGRATED QUALITY-CONTROL - A MULTIDIMENSIONAL ANALYTICAL APPROACH

A PYE 2-(1-pyrenyl)ethyldimethylsilylated silica gel] column HPLC in c ombination with MDGC-ECD has been developed for a sensitive and select ive determination of toxic mono- and non-ortho ECBs in environmental s amples. This technique was applied to environmental samples such as co astal water, suspended particulate material (SPM), coastal sediment, m ussels, fish, bird and marine mammal. Determination of PCB 156 along w ith non-ortho congeners acted as matrix-integrated quality control par ameter. This hyphenated technique offers one of the most sensitive way of determining non-ortho PCBs but also reveals the immense complexity of the coelution problem which unnoticed results in over estimation o f toxic PCBs in the environmental samples. (C)1998 Elsevier Science Lt d. All rights reserved