铅是有害元素 ,也是大气重金属污染物中毒性较大的一种 ,接触过量 ,可损害健康 ,发生急慢性中毒 ,过量铅所引起的慢性中毒是危害儿童健康的头号祸首 ,对儿童智力产生不可逆的影响 ,造成儿童智力底下。尿铅已被认为是较好的生物监测指标[1] ,目前 ,测定尿中铅含量的方法很多 ,氢 Lead is a harmful element, but also the atmosphere of heavy metal pollutants, a greater toxicity, excessive exposure can damage health, acute and chronic poisoning, chronic poisoning caused by excessive lead is the number one culprits endangering children’s health, the children’s intelligence irreversible The impact of children’s intelligence. Urinary lead has been considered a good indicator of biological monitoring [1], at present, many methods for the determination of lead in urine, hydrogen