Study on the toxicity of 11 kinds of organic phosphorus pesticides to marine micro-algae

As a environmental factor, the salt content effects on the toxicity of the organic phosphorus pesticids. The effect of some organic phosphorus pesticides in low levels was also found; the more active to the cell membrane, the more poisonous pesticide was. Moreover, the toxicity greatly related with the structures; with the similiar composition and structure, the more offwater ability and the more complicated structure, the more poisonous pesticide was. Moreover, the toxicity greatly related with the structures; with the similiar composition and structure, the more offwater ability and the more complicated structure, the more poisonous the organic phosphorus pesticide was;the toxicity with phenol structures was more poisonous than those without phenol structures; and the phoxin was the most poisonous one with-CN group besides phenol structure.