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目的:了解微量元素铅、镉、铜在儿童不同时期的变化规律。方法:采用原子吸收分光光度法检测2 094例儿童微量元素铅、镉、铜水平。结果:幼儿组铅含量最高,阳性率为14.43%;学龄组镉含量最高,阳性率为7.09%;幼儿组缺铜比例最高,其次为学龄前组、学龄组。结论:不同年龄的儿童体内微量元素含量变化显著。针对与年龄相关的各种高危因素进行早期预防、监测与治疗,可以降低儿童微量元素含量异常发生率。
Objective: To understand the changes of trace elements lead, cadmium and copper in children at different periods. Methods: The levels of lead, cadmium and copper in 2 094 children were detected by atomic absorption spectrophotometry. Results: The content of lead in young children was the highest, with the positive rate of 14.43%. The highest level of cadmium was found in school-age group, the positive rate was 7.09%. The proportion of copper-deficient children was the highest, followed by preschool group and school-age group. Conclusion: The contents of trace elements in children of different ages have significant changes. Early prevention, monitoring and treatment of various age-related risk factors can reduce the abnormal incidence of trace elements in children.