Comparative Aqueous Toxicity of Silver Compounds: Laboratory Studies with Freshwater Species.

Autor:	Rodgers, Jr., J. H.1, Deaver, E.2, Suedel, B. C.3, Rogers, P. L.1
Předmět:	*Toxicity testing *Freshwater fishes *Industrial contamination *Heavy metals Silver compounds Silver nitrate Atomic absorption spectroscopy Comparative studies Daphnia Hyalella
Zdroj:	Bulletin of Environmental Contamination & Toxicology. Jun97, Vol. 58 Issue 6, p851-858. 08p. 2 Charts, 1 Graph.
Abstrakt:	The article discusses a comparative study of the relative sensitivities of five freshwater species including Ceriodaphnia dubia, Daphnia magna, Hyalella azteca, Chironomus tentans and Pimephales promelas to three silver compounds including silver nitrate, silver chloride (AgCl) and silver thiosulfate complex using the flame or graphite furnace atomic absorption spectroscopy method. The microcrustaceans C. dubia and D. magna were the most sensitive with a 96-hour lethal concentrations of 0.92 and 1.06 microgram Ag/L, respectively in aqueous silver nitrate experiments, but was relatively insensitive to AgCl and silver thiosulfate complex. C. tentans was the least sensitive in silver exposures but its lethal concentrations were at least 20 times greater than those of other species tested.
Databáze:	GreenFILE
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