SYMPOSIA PAPER Published: 01 January 1982
STP36724S

Prediction of Biological Availability of Organic Chemical Pollutants to Aquatic Animals and Plants

Source

Rainbow trout fry, chironomid larvae, and duckweed plants were exposed to a series of Carbon-14(14C)-labeled compounds in different water types in order to establish whether the water type influences the accumulation of compounds in the test organisms. Fish, insects, and plants consistently accumulated compounds less efficiently from river water than from dechlorinated city water, Suitable regression equations were found empirically to describe the accumulation of compounds in organisms, and the best equations for prediciting the accumulation of methoxychlor were presented. The effect of the water type could not be attributed to the specific chemical components in each water type. Sorption to suspended solids was thought to contribute to the differing efficiencies of uptake but not to fully explain the phenomenon. When methoxychlor was sorbed to celite particles prior to its presentation to organisms, nonfilter feeders accumulated methoxychlor much less efficiently than when this pesticide was presented as an emulsifiable formulation.

Author Information

Lockhart, WL
Canada Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba, Canada
Metner, DA
Canada Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba, Canada
Blouw, AP
Canada Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba, Canada
Muir, DCG
Canada Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba, Canada
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Details
Developed by Committee: E35
Pages: 259–272
DOI: 10.1520/STP36724S
ISBN-EB: 978-0-8031-4831-4
ISBN-13: 978-0-8031-0796-0