Toxicity of copper to Daphnia magna

If the carbonato complexes are accepted as being non-toxic, a set of experiments are needed in which the toxicity of copper to Daphnia magna is measured at equal intervals over the pH range 6.0-8.0. The speciation curves shown in Figure 1 would predict that this set of experiments plus inclusion of all copper complexes involved in the speciation calculations should allo separation of the species of concern into four groups, (Cu ),... 

Andrew, R.W., Biesinger, K.E., and Glass, G.E. Effects of inorganic complexing on the toxicity of copper to Daphnia magna, Water Res. 11, 309-315 (19TT). 

Ryan, A.C., J.R. Tomasso, and S.J. Klaine. 2009. Influence of pH, hardness, dissolved organic carbon concentration, and dissolved organic matter source on the acute toxicity of copper to Daphnia magna in soft waters Implications for the biotic ligand model. Environ. 

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