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heavy metals list

October 2011 . Due to strong affinity of metal cations (Mn+) for sulfur Sulfhydryl groups, - SH, in many enzymes, react with ingested Mn+ Can deactivate the enzyme => stops or alters metabolic processes Mechanism of heavy metal toxicity Found in proteins (e. g. enzymes) Toxic Heavy Metals – Cont. A heavy metal is any of a number of higher atomic weight elements, which has the properties of a metallic substance at room temperature. 6 Heavy metals are natural components of the Earth's crust. copper, selenium, zinc) are essential to maintain the … They cannot be degraded or destroyed. Heavy Metals. 1 International / National Standards for Heavy Metals in Food Dr YY Choi Chemist . Toxic Heavy Metals: Hg, Pb, Cd and As 5 Q. To a small extent they enter our bodies via food, drinking water and air. Why are they toxic? As trace elements, some heavy metals (e.g. Government Laboratory .

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