天津市和平区学龄前儿童血铅水平

目的了解天津市和平区学龄前儿童血铅水平及相关危险因素。方法对该区2926例托幼园所儿童进行血铅水平测定，并对血铅水平≥0.48μmoL／L（100μg／L）的儿童进行个人状况，生活习惯等相关因素的问卷调查和干预。结果儿童血铅水平总体均值为0.24μmol／L，其中≥0.48μmol／L的占14.15％。血铅水平各年龄组之间无差别，但男童高于女童，差异有统计学意义（P〈0.01）。结论不良的卫生和饮食习惯及外界环境的污染是儿童血铅水平高的主要危险因素。

Blood Lead Level of Preschool Children in Heping District of Tianjin City

[Objective] To understand blood lead level and related risk factors of preschool children in Heping district of Tianjin city.[Methods] Lead Level of 2926 children in kindergarten were determined, and questionnaire survey such as personal situation, lifestyle and related factors and intervention were conducted on the children whose blood lead level≥0.48μmoL/L（100μg/L）. [Results] The overall average blood lead level of children were 0.24μmoL/L,among which 14.15% were ≥0.48μmoL/L. There was no difference in all age groups, but the blood lead level of boys was higher than that of girls, the difference was significant （P〈 0.01）.[Conclusion] Poor health and eating habits and the external environment pollution are the major risk factors of high blood lead level of children.