铅是一种不可降解的环境污染物,人长期接触低浓度铅造成体内蓄积,导致造血、泌尿、生殖、免疫、神经、心血管、消化等系统长期慢性的损伤,中枢神经系统是其毒性作用的靶器官之一。发育中的中枢神经系统对铅的神经毒性尤为敏感。研究表明,婴幼儿和孕妇最容易在低水平铅接触环境 Lead is a non-degradable environmental pollutant. Long-term exposure to low concentrations of lead causes the body to accumulate, leading to chronic long-term damage to the hematopoietic, urinary, reproductive, immune, neurological, cardiovascular, and digestive systems. The central nervous system is toxic One of the target organs. The developing central nervous system is particularly sensitive to lead neurotoxicity. Research shows that infants and pregnant women are most exposed to low levels of lead exposure to the environment