摘要
运用大量人群调查、生物实验及病例分析等资料论证了不同价态铬的毒性，证明了Ｃｒ３＋对生物具有有益作用，是人体必需的微量元素；Ｃｒ２＋易被氧化，在生物体内不存在；Ｃｒ２＋和金属铬本身毒性很小或无毒；Ｃｒ２＋的毒性最大．同时简要地介绍了通过食物链对铬的富集情况．
A lot of datds from crow investigation,biological experiment and case analysis were adopted to prove the toxicity of different valence chromium,the result showed Cr 3+ was benetit to living ;Cr 2+ has been oxidized in biology body,there is no in living body;the toxicity of Cr 2+ and metal chromium is lower or no;the toxicity of Cr 6+ is the highest .The condition of bioconcentration for chromium through food chain is simply introduced .
出处
《环境与开发》
1997年第3期46-48,共3页
Environment and Exploitation
