Title

Concentrations and trophic magnification of cyclic siloxanes in aquatic biota from the Western Basin of Lake Erie, Canada

Document Type

Article

Publication Date

2014

Publication Title

Environmental Pollution

Volume

186

First Page

141

Last Page

148

DOI

10.1016/j.envpol.2013.12.003

Abstract

We examine the concentrations and food web biomagnification of three cyclic volatile methylsiloxanes (cVMS) octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6) using aquatic biota collected from Lake Erie. Concentrations of cVMS in biota were within the range reported for other studies of cVMS in aquatic biota. Trophic magnification factors (TMF) were assessed in various food web configurations to investigate the effects of food web structure. TMF estimates were highly dependent on the inclusion/exclusion of the organisms occupying the highest and lowest trophic levels and were > 1 for D4 and D5, indicating biomagnification, in only 1 of the 5 food web configurations investigated and were configuration, but did not correspond with those obtained for cVMS materials. These differences may be attributed to environmental exposure and/or lipid partitioning differences between PCB180 and cVMS. Crown Copyright © 2013 Published by Elsevier Ltd. All rights reserved.

Share

COinS