Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Toxicity Tests of Effluents with Marsh Plants in Water and Sediment.
Author Walsh, G. E. ; Weber, D. E. ; Simon, T. L. ; Brashers., L. K. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/099 ;PUB-686;
Stock Number PB91-200337
Additional Subjects Toxicity ; Aquatic plants ; Chemical water pollutants ; Effluents ; Marshes ; Waste water ; Sewage ; Germination ; Sediments ; Reprints ; Echinochloa crusgalli
Library Call Number Additional Info Location Last
NTIS  PB91-200337 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 10p
Methods are described for toxicity testing of water and sediment with two varieties of the freshwater marsh plant Echinochloa crusgalli (Linneaus) Palisot de Beauvois (Poaceae), and complex effluents. Two tests are described: a seed germination and early seedling growth test in water, and a survival and seedling growth test in natural and synthetic sediments. Effects of effluents from a sewage treatment plant, tannery, textile mill, pulp and paper mill, coking plant and sewage treatment plant included inhibition of germination, chlorophyll synthesis and growth. The tests with rooted marsh plants were sensitive to pollutants and detected toxicity of a range of pollutants in water and sediment. Synthetic sediments similar to natural sediments allowed toxicity tests to be done under carefully controlled conditions of particle size distribution, organic content, pH, electrode potential (Eh) and cation exchange capacity (CEC).