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- W2480171567 abstract "The persistence and widespread environmental occurrence of polychlorinated biphenyls (PCBs) in the air, waterways and industrial facilities has created a need for quantitative and qualitative analysis of Aroclor-like mixtures. Although there are 209 possible PCB concerns, only a limited number have shown toxic activity similar to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). The World Health Organization recently released a list of the 13 most toxic PCB congeners. Each was rated by its Toxic Equivalency Factor relative to TCDD. These 13 PCB congeners belong to the class of toxic coplanar compounds. These congeners commonly contain chlorosubstitutions in the 3,3{prime},4,4{prime} or 3,4,4{prime} or 3{prime},4,4{prime} positions and either 0, 1, or 2 chloro-substituents in the ortho positions. A new capillary column containing a bonded octylmethyl polysiloxane stationary phase (SPB-Octyl) was evaluated for its propensity to separate coplanar PCB congeners. Solid phase microextraction (SPME), a solvent-free method for extracting volatiles and semi-volatiles from drinking water, waste water, soil and sludge was used to extract PCBs from soil. GC-ECD and GC-MS separations of PCB ladened soils were examined via SPME on the SPB-Octyl column. An approach for selective extraction of coplanar PCB congeners by SPME will be described." @default.
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- W2480171567 date "1995-12-31" @default.
- W2480171567 modified "2023-09-27" @default.
- W2480171567 title "Congener-specific extraction and separation of coplanar PCBs from soil using SPME and capillary GC/MS" @default.
- W2480171567 hasPublicationYear "1995" @default.
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