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铅是环境中的重要神经毒物 ,能对婴幼儿和儿童发育中的中枢神经系统造成危害。世界卫生组织(ＷＨＯ) 1994年在关于铅与环境健康评估报告中称婴幼儿、学龄前儿童的血铅水平与智商 (ＩＱ)值显著相关—铅水平在 1.85～ 6 .6 8μｍｏｌ/Ｌ时 ,ＩＱ值降低 3～ 7。目前 ,铅对人类健康
Lead is an important neurotoxic agent in the environment that can harm the central nervous system in the development of infants and children. In the report of the World Health Organization (WHO) on lead and environmental health in 1994, the blood lead levels of preschool children and preschool children were significantly correlated with the IQ value. When the lead level was between 1.85 and 6.88 μmol / L, IQ value decreased by 3 to 7. At present, lead is good for human health