Investigation of Children's Hair Lead Level and Its Effect of Healthy in A Lead-Zinc Mine

To understand the harm of lead to children and discuss the effect of lead pollution on intelligence quotient and growth and development of children in the lead and zinc mine,186 children were chosen as observation group who had lived more than five years in a smelter district in a lead-zinc mine and 156 children were selected as control group who had lived 40 km away from the lead-zinc mine.The general status of children's physical examination(including calcium,hair loss,anemia,easy to have a cold)and IQ(including VIQ,PIQ,FIQ)were investigated and mineral elements in hair were determined.The results showed that hair lead and zinc,hair loss and positive rate of anemia of the observation group was significantly higher than that of the control group,hair calcium contrary(P0.05,P0.01),while the VIQ,PIQ and FIQ were significantly lower than those of the control group(P0.05).The lead pollution in lead-zinc mine has a bad effcct on the IQ and growth and development of the children in mine.