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目的了解某铜冶炼厂对周边居住儿童血铅及其他重金属含量的影响。方法 2010年11—12月期间以某铜冶炼厂为固定点源,在与其距离0～5 km、5～10 km、>10 km处分别选取1～2所小学,以6～11岁儿童作为研究对象,共采集80名儿童(其中男童38人,女童42人)的静脉血。采用电感耦合等离子质谱法(ICP-MS)测定全血中铅、锌、铁、铜、硒、镍、汞、镉、铬、锰十种元素的含量。结果血铅、铜、镉和锰的几何均值分别为28.50、926.67、0.16和17.19μg/L,血锌和硒的算术均值分别为5.23 mg/L和131.78μg/L;血铁、镍、汞、铬的中位数分别为469.98 mg/L、2.38μg/L、0.55μg/L和1.73μg/L。儿童全血重金属含量与其在读学校距冶炼厂的距离及儿童年龄之间都无明显的相关关系。血铅、铁、锌分布存在性别差异,其余元素在不同性别的分布无统计学差异。结论铜冶炼厂周边儿童全血铅及其他重金属元素含量基本在正常值范围内;儿童全血重金属元素含量与其在读学校距污染源的距离无相关关系。
Objective To understand the effect of a copper smelter on blood lead and other heavy metals in living children. Methods From November to December 2010, a copper smelter was used as a fixed point source, 1 ~ 2 primary schools were chosen at a distance of 0 ~ 5 km, 5 ~ 10 km and> 10 km respectively, and children aged 6 ~ 11 years Participants, a total of 80 children (including 38 boys and 42 girls) venous blood. The contents of lead, zinc, iron, copper, selenium, nickel, mercury, cadmium, chromium and manganese in whole blood were determined by inductively coupled plasma mass spectrometry (ICP-MS) Results The geometric mean values of blood lead, copper, cadmium and manganese were 28.50, 926.67, 0.16 and 17.19 μg / L respectively, and the arithmetical mean values of zinc and selenium were 5.23 mg / L and 131.78 μg / L respectively. , The median chromium were 469.98 mg / L, 2.38μg / L, 0.55μg / L and 1.73μg / L respectively. There was no significant correlation between heavy metals in children’s whole blood and their distance from school to smelting school and children’s age. There were gender differences in blood lead, iron and zinc distribution, and the distribution of the remaining elements in different genders was not statistically different. Conclusion The content of lead and other heavy metals in whole blood of children around the copper smelter is basically within the normal range. There is no correlation between the contents of heavy metal elements in children’s whole blood and the distance from the source of pollution in school.