六价铬化合物是普遍存在的环境污染物,常用于印染、皮革加工、木材防腐保存、有机合成及某些催化剂的制造等。其毒性大,人体口服六价铬的致死剂量约为1·5~1·6 g,能影响体内氧化、还原代谢,并可与核酸结合引起呼吸道、消化道刺激作用,并有明显的致癌作用。早在1935年,德国的工 Hexavalent chromium compounds are ubiquitous environmental pollutants, commonly used in printing and dyeing, leather processing, wood preservative preservation, organic synthesis and the manufacture of certain catalysts. Its toxicity, the body of oral hexavalent chromium lethal dose of about 1.5 ~ 1.6 g, can affect the body oxidation, reduction of metabolism, and nucleic acid can cause respiratory, gastrointestinal stimulation, and a significant carcinogenic effect . As early as 1935, German workers