Ecotoxicity of cyanide complexes in industrially contaminated soils.

This study deals with acute and chronic ecotoxicity of leachates from industrially contaminated soils. Analyses focused on cyanides (complex and free forms) to study their possible involvement in leachates toxicity. No acute toxicity on the Microtox and 48 h-Daphnia magna tests was found in leachates collected over 18 months, but a high chronic toxicity was recorded on the reproduction of Ceriodaphnia dubia (EC50-7d=0.

Chronic toxicity of chlordane to Daphnia magna and Ceriodaphnia dubia: a comparative study.

Chronic toxicity of chlordane, an organochlorine insecticide, was assessed on Ceriodaphnia dubia under standardized conditions of testing. Results were compared to Daphnia magna to determine the sensitivity of the two freshwater cladoceran species to this persistent organic pollutant (POP) and to explore the possibility of using the 7-day C. dubia test as an alternative to the 21-day D.

Reproductive effects and bioaccumulation of chlordane in Daphnia magna.

Acute and chronic toxicity of high-grade chlordane (98%) and bioaccumulation were investigated in Daphnia magna at water soluble concentrations obtained without cosolvent. The measured effective concentrations immobilizing 50% of the microcrustacea (95% confidence interval) were 22.6 (19.