Hexavalent Chromium Research Paper

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Chromium is a transitional element, with three stable forms. It is a neutrally charged stable form, but naturally occurs in the environment. Trivalent chromium is a +3 charge stable form of chromium that can be naturally oxidized from its neutrally charged version, occurring in the environment (Mertz et al., 1974; Barrett et al., 1985; Alexander et al., 1990). Hexavalent chromium is a +6 charge stable form of chromium which is the product of industry, and it is very toxic to living things. Hexavalent chromium may be reduced naturally in the environment to the less harmful trivalent chromium. Trivalent chromium is also mostly insoluble, while hexavalent chromium is very soluble allowing for this toxic substance to flow easily as a contaminant
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