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铅的危害1.铅对人的神经系统有极强的毒性,可损伤大脑和神经,易使孩子智能低下、反应迟钝、多动、注意力不集中、易激怒、运动失调等。血铅每上升10μg/dl,智商下降6～10。2.铅使生长发育迟缓,阻碍人体对微量元素钙、锌、铁等吸收,延缓儿童的体格发育。血铅每上升
Lead hazards 1. Lead on the human nervous system has a strong toxicity, can damage the brain and nerves, easy to make children smart, slow reaction, hyperactivity, inattention, irritability, dyskinesia and so on. Blood lead increased by 10μg / dl, IQ decreased 6 ~ 10.2 Lead to growth and retardation, hinder the body’s absorption of trace elements such as calcium, zinc, iron, delay the physical development of children. Every increase in blood lead