Accession Number : ADA292610
Title : Environmental Effects of Dredging. Simplified Approach for Evaluating Bioavailability of Neutral Organic Chemicals in Sediment.
Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
Personal Author(s) : McFarland, Victor ; Clarke, Joan
PDF Url : ADA292610
Report Date : MAR 1987
Pagination or Media Count : 11
Abstract : This note outlines a tiered approach for evaluation of bioavailability of neutral organic contaminants in sediment and provides a method for the numerical expression of bioavailability. The first tier is a simple mathematical calculation, from sediment chemistry, of maximum potential bioaccumulation. If Tier I calculations indicate potential bioaccumulation of neutral organic contaminants to concentrations of concern, then Tier II laboratory tests could be conducted to determine the actual amount of bioaccumulation. In the second tier, bioaccumulation is assessed in laboratory exposures of organisms to the contaminated sediment. Comparison of the actual bioaccumulation at projected steady state to the calculated maximum potential bioaccumulation results in a measure of bioavailability. pg1. JMD
Descriptors : *CHEMICALS, *NEUTRAL, *CONTAMINATION, *DREDGING, *SEDIMENTS, STEADY STATE, LABORATORY TESTS, COMPUTATIONS, NUMERICAL ANALYSIS, ENVIRONMENTAL IMPACT, CHEMISTRY, ORGANIC MATERIALS, CONTAMINANTS, MATHEMATICS, SIMPLIFICATION.
Subject Categories : Organic Chemistry
Physical and Dynamic Oceanography
Water Pollution and Control
Distribution Statement : APPROVED FOR PUBLIC RELEASE