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 inhalation (spraying of paraquat as fine mist since spray droplets are too large to be inhaled).
Intact skin is an effective barrier to paraquat absorption; dermal exposure is life-threatening only in the presence of skin lesions or on prolonged contact (like soaked clothes).
Local effects include skin irritation, blistering, and full-thickness burns. Inhalational exposure can occur due to . Inhalation of sprayed paraquat solution usually causes local irritation . . .
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