Rapid ecotoxicological biomonitore of heavy metal-p olluted soil using Daphnia carinata phototaxis inhibition test

The rapid biomonitore of ecotoxicity of heavy metal-polluted soil using Daphnia carinata phototaxis inhibition test was studied.It shows that the phototactic index of Daphnia is positively related with the cadmium and lead added to soil.The order of the ecotoxicity of heavy metal-poll uted soil is the solution extracted by acid＞the solution extracted by water in the same pollution level,and is Cd＞Pb,the solution extracted by water+heavy metal＞the solution extracted by acid+heavy metal in the same content of heavy metal,much lower than that in ISO standardized solutions.It seems reasonable to suggest the sensitivity,efficiency and reliability for this rapid method in the monitor of soil ecotoxicity.