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Arsenic (As)

Metalloid; trivalent arsenite (As III) is 60 times more toxic than pentavalent arsenate (As V). Thiol-group blocker that poisons mitochondrial enzymes (pyruvate dehydrogenase). Sources: contaminated groundwater (West Bengal arsenicosis belt), Paris green pesticide, opium adulteration, traditional Ayurvedic and Unani preparations.

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Related terms

Dry ashingHydride generation (HG-AAS)Lead (Pb)Marsh test (1836)Mercury (Hg)Reinsch testThallium (Tl)Wet digestion

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