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Dielectric spectroscopy (DS) was utilized to investigate the toxicity of the Cu2+ solution to Microcystis aeruginosa. It was found that 0.04 mM Cu2+ had no effect on dielectric increment, whereas the Cu2+ concentrations above 0.1 mM decreased the value of Δɛ/Δɛintact. The toxic effect of Cu2+ on M. aeruginosa cells was time-dependent and concentration-dependent. There was a threshold concentration...
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