Record Display for the EPA National Library Catalog

RECORD NUMBER: 610 OF 4531

OLS Field Name OLS Field Data
Main Title Effects of Synthetic Polyelectrolytes on Selected Aquatic Organisms.
Author Biesinger, K. E. ; Stokes, G. N. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Year Published 1986
Report Number EPA/600/J-86/128;
Stock Number PB87-100715
Additional Subjects Polyelectrolytes ; Toxicity ; Aquatic biology ; Water pollution ; Minnows ; Daphnia ; Diptera ; Tests ; Polymers ; Cations ; Concentration(Composition) ; Safety ; Bioassay ; Algae ; Detoxification ; Trout ; Exposure ; Clay soils ; Flocculating ; Sewage treatment ; Damage ; Reprints ; Water pollution effects(Animals)
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Status
NTIS  PB87-100715 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 9p
Abstract
The acute toxicity of several polyelectrolytes to daphnids (Daphnia magna), fathead minnows (Pimephales promelas), gammarids (Gammarus pseudolimnaeus) and midges (Paratanytarsus parthenogeneticus) was tested. Most nonionic and anionic polyelectrolytes were not toxic at 100 mg/l which was the highest concentration tested. Two of 15 cationic polyelectrolytes were not toxic at 100 mg/l, whereas the toxicity of the others ranged from 0.09 to 70.71 mg/l. A cationic polyelectrolyte was tested in microcosms using five aquatic animals and 10 algae; various adverse effects were observed. Exposure of fathead minnows to a cationic polyelectrolyte resulted in severe gill damage.