铅是一种有害的金属元素,铅对少儿危害的严重性远远高于成人,而且由于少儿的肝、肾功能尚未发育完全,解毒和排毒功能又比成年人差得多,所以少儿年龄越小,对铅的敏感越大,受到的危害也越严重。南京前几年曾对幼儿做了发铅检查,有36.9％幼儿发铅超标。铅易造成少儿身心、智力和体格等不良影响。慢性铅中毒使少儿的心理功能、智力和感觉功能都受到损伤,表现出烦躁、嗜睡、行为异常(如多动)、注意力 Lead is a harmful metal element, the severity of the harm of lead to children is far higher than adults, and children’s liver and kidney function has not yet fully developed, detoxification and detoxification function is much worse than adults, so children age Small, the more sensitive to lead, the harder it is. A few years ago in Nanjing made a lead examination of children, 36.9% of children lead overweight. Lead easily lead to children’s physical and mental, mental and physical adverse effects. Chronic lead poisoning makes children’s mental, intellectual and sensory functions are impaired, showing irritability, drowsiness, abnormal behavior (such as hyperactivity), attention