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众所周知,铅是一种有毒的渗透性化学物质,可导致儿童在神经系统、生理系统和行为方面出现问题。血铅浓度较低时,可造成人听力障碍和智商降低,血铅浓度较高时,可出现严重脑部疾病、记忆力丧失甚至死亡。因此,即使是暴露在相对较低的铅环境中,铅对人体也会产生危害。目前,世界卫生组织(WHO)和美国疾病预防控制中心(CDC)将血铅浓度≥10μg/dL作为人体血液铅含量超标的参
It is well-known that lead is a toxic and penetrating chemical that can cause problems in the nervous system, physiology and behavior of children. Low levels of blood lead can cause hearing loss and IQ decreased, high blood lead levels, there may be serious brain disease, memory loss or even death. As a result, lead can be harmful to the human body even when exposed to a relatively low lead environment. At present, the World Health Organization (WHO) and the United States Centers for Disease Control and Prevention (CDC) blood lead concentration ≥ 10μg / dL as human blood lead content exceeded