Title

Polychlorinated Biphenyls in Sediment and Biota from the Delaware River Estuary

Publication Date

4-1-2009

Document Type

Article

Abstract

A spatially comprehensive evaluation of polychlorinated biphenyl (PCB) inventories in white perch, channel catfish, small prey fish, amphipods and sediment within four zones of the Delaware River Estuary was completed during two seasons (fall 2001 and spring 2002). Highest sediment PCB concentrations occurred adjacent to urbanized and industrialized stretches of the estuary. Whole organism MICB body burdens (on a wet weight basis) reflected the spatial distributions in sediment PCB concentrations. However, there was considerable variation in PCB concentrations among individual catfish and perch fillets within zones that were not significantly reduced by lipid normalization. This variation suggests that within a zone man), factors (e.g., dietary shifts, small-scale heterogeneity in sediment contamination, and non-equilibrium conditions in contaminant partitioning) drive PCB bioaccumulation. With increasing down-estuary distances, all biota except for perch had enhanced concentrations of more chlorinated congeners, especially nona- and deca-chlorinated biphenyls. Specific congeners such as PCB 206 and 209 may act as indicators of unique local sources of contamination within the lower portions of the Delaware River Estuary.

Publication Title

Proceedings of the Academy of Natural Sciences of Philadelphia

Volume

158

First Page

89

Last Page

105

DOI

10.1635/053.158.0105

Version

policy not available.

This document is currently not available here.

Find in your library

Share

COinS