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目的探讨河南省中牟县学龄前儿童血铅(Pb)水平及其与锌(Zn)、铜(Cu)、铁(Fe)、钙(Ca)、镁(Mg)、锰(Mn)水平的关系。方法对624名2～5岁学龄前儿童血液中Pb、Zn、Cu、Fe、Ca、Mg、Mn水平进行测定,采用多元线性回归方法分析血中Pb与血中Zn、Cu、Fe、Ca、Mg、Mn等水平的相关性。结果以美国国家疾病预防控制中心(CDC)制定的铅中毒标准(血Pb水平≥0.483μmol/L)为界限,学龄前儿童的铅中毒检出率为22.6%,其中男童铅中毒总检出率及其4岁～组铅中毒检出率明显高于女童;男童血中Pb和Cu水平高于女童(P<0.05,P<0.01)。但是,血Pb水平与6种元素水平之间未见明显相关关系。结论中牟县学龄前儿童血Pb与Zn、Fe、Cu、Ca、Mg、Mn水平之间未见有相关关系。
Objective To explore the relationship between blood lead (Pb) levels and the levels of zinc, copper, iron, calcium, magnesium and manganese in Zhongmou County, Henan Province. . Methods The levels of Pb, Zn, Cu, Fe, Ca, Mg and Mn in 624 preschool children aged 2 ~ 5 years were measured. The levels of Pb, Zn, Cu, Fe and Ca in blood were determined by multivariate linear regression analysis. Mg, Mn and other levels of correlation. Results According to the lead poisoning standard (blood Pb level ≥0.483μmol / L) established by the National Centers for Disease Control and Prevention (CDC), the detection rate of lead poisoning in preschool children was 22.6%, of which the total detection of lead poisoning in boys The detection rate of lead and its 4-year-old group was significantly higher than that of girls. The levels of Pb and Cu in boys blood were higher than those of girls (P <0.05, P <0.01). However, no significant correlation was found between blood Pb levels and the six elemental levels. Conclusion There is no correlation between Pb and Zn, Fe, Cu, Ca, Mg, Mn levels in preschool children in Zhongmou County.