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镉是一种白色、可压和可延展的金属,密度8.65,熔点321℃,沸点778℃。其矿物与锌和铅共存,燃烧时放出棕色的氧化镉烟雾。美国所定的空气中最高容许浓度为0.1毫克/立方米。大多数镉的盐类是很毒的,用于工业上者主要有氧化镉、硫化镉、氯化镉、溴化镉和硫酸镉等。作者就以下四方面对镉的毒性作用作综合性介绍。
Cadmium is a white, compressible and ductile metal with a density of 8.65, a melting point of 321 ° C and a boiling point of 778 ° C. Its minerals co-exist with zinc and lead, releasing brown cadmium oxide fumes when burned. The maximum allowable concentration of air in the United States is 0.1 mg / m3. Most of the cadmium salts are very toxic, for industrial use are mainly cadmium oxide, cadmium sulfide, cadmium chloride, cadmium bromide and cadmium sulfate. The author of the following four aspects of the toxic effects of cadmium for a comprehensive introduction.