Paraquat (PQ) is nonselective contact herbicide that binds strongly to soil, where it is highly persistent. Paraquat is acutely toxic to mammals through all routes of exposure-oral, dermal, parenteral and …

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2,4-D formulations include esters, acids, and several salts, which vary to a lesser extent in toxicity. The dimethyl-amine salt (DMA) and 2-ethylhexyl ester (EHE) forms account for approximately 90-95% of …

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