淮南煤矿是我国八大煤炭基地之一。煤的燃烧是环境污染的重要来源,据报告:煤中重金属元素铅含量为2～16ppm,镉为1～2ppm。铅和镉皆为重金属毒物,非人体必需元素,机体内的蓄积将引起毒作用,尤其在儿童可能会致使智力低下。为了解矿区儿童体内铅、镉含量及探索其毒作用,我们于1984年 Huainan coal mine is one of the eight major coal bases in China. Coal combustion is an important source of environmental pollution, according to the report: heavy metals in coal lead content of 2 ~ 16ppm, cadmium 1 ~ 2ppm. Lead and cadmium are heavy metal toxicants, non-human essential elements, the body’s accumulation will cause toxic effects, especially in children may cause mental retardation. To understand lead and cadmium levels in children in mining areas and to explore their toxic effects, we in 1984