Abstract

The chemical composition of paraquat is C12H14N2 and its molecular weight is 186.3. The lipid hydroperoxide induced by paraquat destroys cell membranes and kills the tissue of green plants via an oxidative process, which is initiated by the formation of superoxide as a result of the suppressed reduction of NADP in the course of photosynthesis when exposed to this herbicide. However, outside the living plant, this powerful superoxide is changed into a relatively inert chemical at high temperature or when exposed to soil mineral. Consequently, when paraquat is sprayed in the environment, it quickly loses its

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