铅是一种具有蓄积性、多亲和性的毒物,一旦进入人体将很难排除,能直接伤害人的脑细胞,特别是胎儿的神经系统,可造成先天智力低下,对老年人也会造成痴呆等影响,另外还有致癌,致突变作用,所以食品卫生监督检验中,铅被列为重要的监测对象。食盐作为日常生活中的必需品,必须加 Lead is a kind of accumulating, multi-affinity poison. Once it enters the body, it will be hard to rule out. It can directly injure human brain cells, especially the fetus’s nervous system, which can cause innate mental retardation and may also cause the elderly Dementia and other effects, as well as carcinogenic, mutagenic effect, so food hygiene supervision and inspection, lead is listed as an important monitoring object. Salt as a necessity in daily life, must be added