武汉某地区2026名儿童头发中铜锌铁钙镁含量分析

Analysis of the contents of copper,zinc,calcium,magnesium and iron in the hair of 2026 children from a certain community in Wuhan

目的测定0～10岁儿童头发中Cu、Zn、Fe、Ca、Mg含量，分析儿童微量元素含量变化与性别、年龄的关系及营养状况。方法采集婴幼儿发样进行预处理后用火焰原子分光光度法测定Cu、Zn、Fe、Ca、Mg含量，并对测定结果进行统计学分析。结果孙、ca2种元素含量的性别差异有统计学意义（P〈0．05），其他元素受性别影响不大（P〉0．05）。0—4月龄婴儿发中5种元素含量均处于较高水平，随着年龄的增长至5月～3岁龄其含量均呈下降趋势，且Zn和Ca下降最为明显。随着年龄进一步增长至8—10岁龄，其含量略呈回升趋势。结论婴幼儿特别是在5月～3岁龄应加强微量元素的营养补充。

[ Objective] To detect the contents of copper, zinc, iron, calcium and magnesium in the hair of 0-10 years old children, analyze the relationship of the change of microelement contents in children with gender and age and the nutritional status. [ Methods] The hair samples were collected from infants. After pretreatment, the contents of copper, zinc, iron, calcium and magnesium were detected by flame atomic absorption spectrometric method. The statistic method was adopted to analyze the results. [ Results] There were significant differences in contents of zinc and calcium between different gender （ P 〈 0. 05） ,but the differences of other elements were not significant （ P 〉 0. 05 ） . The contents of five elements in infants aged 0- 4 months remained at a high level. With the growth of age, the contents gradually decreased in 4 months to 3 years old, especially the zinc and calcium. The contents began to slightly rise again with the age increased to 8-10 years old. [Conclusion] Children especially in the age of 4 months to 3 years old should enhance the microelement supplement.