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目的:了解开封市城区3～5岁儿童体内铅水平现状及其影响因素。方法:采用末梢血锌原卟啉(ZPP)检测技术及问卷调查法。结果:排除缺铁性儿童,对1089例儿童的末梢血ZPP值进行测定,1089例儿童的ZPP值是正态分布,平均值(x)为0.58umol/L,标准差(S)为0.015umol/L。同时对入选的正常儿童230名ZPP值进行描述分析:呈正态分布,x±1.96s=0.5565,±0.25548umol/L。结论:开封市城区3～5岁儿童ZPP正常参考值为0.56umol/L,上限值为0.81umol/L;对ZPP影响因素依大小为:幼儿园装修材料(油漆、仿瓷涂料),家庭装修材料(板材、仿瓷涂料),手口不良习惯、年龄、父母职业、户外活动时间及住房年代。
Objective: To understand the current lead status and its influencing factors in children aged 3 ~ 5 years in Kaifeng City. Methods: The peripheral blood zinc protoporphyrin (ZPP) detection techniques and questionnaires. Results: Excluding children with iron deficiency, ZPP values of peripheral blood were measured in 1089 children. The ZPP values of 1089 children were normal distribution with the mean (x) of 0.58umol / L and the standard deviation (S) of 0.015umol / L. At the same time, 230 ZPP values of normal children were analyzed and described as follows: normal distribution, x ± 1.96s = 0.5565, ± 0.25548umol / L. Conclusion: The normal reference value of ZPP in children aged 3 ~ 5 years in Kaifeng City is 0.56umol / L, the upper limit is 0.81umol / L. The influencing factors of ZPP are: kindergarten decoration materials (paint, imitation porcelain coating), home decoration Materials (plates, imitation porcelain coating), bad hand gestures, age, parental occupation, outdoor activities and housing years.