Chromium biology

Four essential elements, Ft, O, C, and N, comprise more than 99 atom % and about 96 wt % of the human body. These 4 and 14 other essential elements occur among the first 30 elements (through zinc) of the periodic table. (Uncertainties surround the status of chromium (see Chromium Biological Relevance). ) Three heavier trace elements Se, Mo, and I are also essential in humans. For 17 tabulated essential elements, Table 1 shows the predominant elemental form at pH 7, typical adult concentrations in the blood plasma or serum, the approximate amount found in a 70-kg adult, and a recommended adult daily allowance. In addition to... 

Aluminum Inorganic Chemistry Cadmium Inorganic Coordination Chemistry Chromium Biological Relevance Hard Soft Acids and Bases Lead Inorganic Chemistry Mercury Inorganic Coordination Chemistry Mercury Organometallic Chemistry Thallium Inorganic Chemistry. 

Another interesting study is the determination of the distribution of Cr valence states in human cells after in vitro exposure to soluble or particulate chromium compounds. The chromium biological activity depends strongly upon its oxidation state and solubihty. Several hexavalent chromium, Cr(VI),... 

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