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在已发现的一百多种元素里,约有五分之四的是金属元素。而金属元素与职业有关的主要有35种。如处之不当,其中至少约有21种可构成职业危害,并对人十分肯定的致毒作用。虽然有10多种金属元素(微量的)在人体内,在生物化学过程中做为酶、激素、维生素、核酸的成份,保持生命的代谢过程。但如果摄入过量的一种金属,它们相互之间可以发生作用,仍会构成金属中毒,危害健康。金属铅的毒性,几世纪前人们就已认识到。有关资料表明,在制造蓄电池过程及印刷工业、油漆工业、铅化物生产、铅管和电缆的制造、陶瓷器生产、冶金工业、硫酸工业、合成树脂工业、石油工业、电子工业等生产过程中,存在着铅的毒性作用,包括造血障碍,出现“铅容”。在金、银等金属提
About a fifth of the more than 100 elements that have been discovered are metallic elements. The main metal-related 35 kinds of occupations. If not properly handled, of which at least about 21 kinds of occupational hazards can be formed, and very positive to people’s toxic effects. Although there are more than 10 kinds of metal elements (trace) in the human body, in the biochemical process as enzymes, hormones, vitamins, nucleic acid components, to maintain the life process of metabolism. However, if an excessive amount of metal is ingested, they can act in relation to each other and still cause metal poisoning and endangering health. The toxicity of metallic lead has been recognized by centuries ago. The data show that in the manufacturing process of batteries and the production of printing industry, paint industry, lead production, manufacture of lead pipes and cables, ceramics production, metallurgical industry, sulfuric acid industry, synthetic resin industry, petroleum industry, electronic industry and other production processes, There are toxic effects of lead, including hematopoietic disorders, the emergence of “lead content.” In gold, silver and other metal mention