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Toxicity of major geochemical ions to freshwater species
Citation:
Erickson, R., Dave Mount, T. Highland, R. Hockett, D. Hoff, T. Norberg-King, B. Forsman, AND K. Peterson. Toxicity of major geochemical ions to freshwater species. Aquatic Toxicology Symposium, Bar Harbor, ME, June 07 - 09, 2016.
Impact/Purpose:
not applicable
Description:
Extensive testing regarding the toxicity of major geochemical ions to Ceriodaphnia dubia, Hyalella azteca, and Pimephales promelas will be presented. For C. dubia, tests of single salts and binary mixtures in various dilution waters demonstrated multiple mechanisms of toxicity and characterized interactions among ions that were similar for acute and chronic toxicity. Mathematical models were developed to predict the toxicity of any ion mixtures and successfully applied to test waters emulating ion mixtures observed in the field. Both similarities and differences regarding these C. dubia toxicity relationships were observed for acute and chronic toxicity to H. azteca and P. promelas, but similar predictive models appear possible.