The Effects of Feeding and Not Feeding, Aging and Not Aging Test Solutions on the Toxicity of Silver to Daphnia magna

Abstract

Simultaneous 48-h static acute toxicity tests were conducted exposing the cladoceran, Daphnia magna, to silver solutions with four test conditions. The tests consisted of exposing test organisms to aged test solutions with one group fed and the other not fed, and non-aged test solutions with one group fed and the other not fed. The four acute tests generated independent EC50 values at 4, 24, and 48 h of exposure to silver.