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Effects of Sediment and the Route of Exposure on the Toxicity and Accumulation of Neutral Lipophilic and Moderately Water-Soluble Metabolizable Compounds in the Midge, Chironomus riparius / MJ. Lydy, KA. Bruner, DM. Fry, SW. Fisher

Conference Author
Aquatic Toxicology and Risk Assessment: Thirteenth Volume (13th : 1989 : Atlanta, Georgia)
Physical Description
1 online resource (25 pages) : illustrations, figures, tables
Additional Creators
Bruner, KA., Fisher, SW., Fry, DM., Lydy, MJ., American Society for Testing and Materials, and ASTM International
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Summary
The toxicity and accumulation of eleven moderately water-soluble metabolizable (MSM) or neutral lipophilic (NL) compounds were examined in the midge Chironomus riparius in tests without sediment (water only) and in treatments with sediment to which the test chemical was added directly to the water (spiked water) or directly to the sediment (spiked sediment). In general, the toxicity of NL compounds was significantly reduced when sediment was present regardless of whether the compound was added to the water or the sediment. The observed reduction in toxicity when sediment was present was attributable to sorption of the chemical to sediment, dissolved organic carbon (DOC), and particulates and was anticipated from literature Kow and measured Koc values. The toxicity and accumulation of MSM compounds in sediment and nonsediment systems were much more variable than for the NL compounds. For 1-naphthol, no significant difference in the distribution of parent chemical was seen in the water or sediment when used, although the toxicity of 1-naphthol was lowest when the compound was added directly to water in the presence of sediment. For the remaining MSM compounds, toxicity was significantly reduced only when the chemical was added directly to sediment. In general, partition coefficients were less useful in predicting the environmental behavior of MSM compounds. The most notable effect of sediment upon the MSM group was that the persistence of the parent compound was greatly increased in the sediments when the chemical was added to sediment.
Dates of Publication and/or Sequential Designation
Volume 1990, Issue 1096 (January 1990)
Subject(s)
Other Subject(s)
ISBN
9780803151512 (e-ISBN)
9780803114609
0803114605
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 45.
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Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1990. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
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