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目的:了解台州市椒江区儿童体内微量元素的水平及分布状况。方法:采用石墨炉原子吸收法对1200例0～6岁儿童静脉血中铜、锌、铁、钙、镁、铅元素进行测定。结果:微量元素缺乏率依次为钙15.92%、锌16.67%、铁14.41%、铜1.58%、镁0.67%,铅中毒率为3.75%;婴幼儿组铜、锌、铁、钙、镁缺乏率均显著高于学龄前组(P<0.05),但铅中毒率显著低于学龄前组(P<0.05);ADHD患儿血铅的含量高于健康体检儿童(P<0.05),血锌的含量低于健康体检儿童(P<0.05)。结论:ADHD患儿存在血铅、血锌异常现象;婴幼儿期和学龄前儿童应重点防治钙缺乏和锌缺乏,同时学龄前儿童还应重点预防铅中毒的发生。
Objective: To understand the levels and distribution of trace elements in children in Jiaojiang District of Taizhou City. Methods: The contents of copper, zinc, iron, calcium, magnesium and lead in 1200 children aged 0-6 years were measured by graphite furnace atomic absorption spectrometry. Results: The rates of trace elements deficiency were 15.92% for calcium, 16.67% for zinc, 14.41% for iron, 1.58% for copper and 0.67% for magnesium, respectively. The lead poisoning rate was 3.75%. The rates of copper, zinc, iron, (P <0.05), but the rate of lead poisoning was significantly lower than that of preschool age group (P <0.05). The content of blood lead in children with ADHD was higher than that of healthy children (P <0.05) Lower than healthy children (P <0.05). Conclusion: There are abnormalities of blood lead and blood zinc in children with ADHD. Infants and preschool children should focus on prevention of calcium deficiency and zinc deficiency. At the same time, pre-school children should focus on prevention of lead poisoning.