An Integrated Field and Laboratory Study of the Bioavailability of Metal Contaminants in Sediments

Abstract

We studied the influence of sediment geochemistry on bioavailability of arsenic, cadmium and chromium in deposit-feeding polychaetes. Metal phase speciation in sediments was determined with a sequential extraction scheme, and assimilation efficiencies (AEs) of ingested metals were determined by pulse-chase feeding experiments using -emitting isotopes. Worms were fed sediments collected from geochemically diverse estuaries that were labeled by sorbing dissolved radiotracers or mixing with radiolabeled algae.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2012
Accession Number
ADA619401

Entities

People

  • Nicholas Fisher

Organizations

  • Stony Brook University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Cells
  • Chemical Synthesis
  • Chemistry
  • Eutrophication
  • Fish
  • Fisheries
  • Habitats
  • Wildlife

Fields of Study

  • Environmental science

Readers

  • Agricultural Chemistry/Soil Science
  • Aquatic Ecology
  • Electrochemical Engineering/ Fuel Cell Technologies