Copper, arsenite sulfids

Water. For Cu the sulfate is efflorescent in dry air the crystallized chloride and chlorate are deliquescent the acetate is efflorescent. Copper(II) borate, basic carbonate, cyanide, oxalate, phosphate, arsenite, sulfide, and the hexacyanoferrates (II and III) are insoluble. 

Copper is an essential element, being active in many enzymes and hemocyanin. Copper is an essential nutrient element to animals and plants. However, high Cu accumulation in animals and plants can be toxic. Copper is found in three oxidation states including cupric (+2), cuprous (+1), and elemental Cu (0). Cu+ and Cu + are the most important forms and are involved in oxidation-reduction reactions in soils and sediments (Figure 12.7). Cu+ and Cu + can exist in aqueous systems, although the latter is much more dominant. Copper is widely distributed in nature in its elemental state and in the form of sulfide, arsenite, chloride, and carbonates. The earth s crust on an average contains approximately 50 ppm copper. Soil and sediment contain approximately... 

Lee-Chen SF, Yu CT, Jan KY (1992) Effect of arsenite on the DNA repair of UV-irradiated Chinese hamster ovary cells. Mutagenesis 7 51-55 Li Y, Togashi Y, Sato S, Emoto T, Kang J-H, Takeichi N, Kobayshi H, Kojima Y, Une Y, Uchino J (1991) Abnormal copper accumulation in non-cancerous and cancerous liver tissues of LEC rats developing hereditary hepatitis and spontaneous hepatoma. Jpn J Cancer Res 82 490-492 Lin XH, Sugiyama M, Costa M (1991) Differences in the effect of vitamin E on nickel sulfide or nickel chloride-induced chromosomal aberrations in mammalian cells. Mutat Res 260 159-164... 

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