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作者WFX—1E原子吸收分光光度计对柳州铁路地区500名6～12岁健康儿童头发中五种微量元素(锌、铁、铜、锰、镉)含量进行了测定。分析结果表明:头发中五种微量元素含量在不同性别之间的差异无显著性;发锌、铜、锰、含量随年龄的增长而增加,与年龄呈正相关;而发铁、镉则恰好相反,随年龄的增长而减少,与年龄存在负相关。作者用百分位数法计算出该地区健康儿童头发五种微量元素含量的95％正常值范围为:锌38.30～177.55ppm,铁10.49～105.71ppm,铜0.95～38.33ppm,锰0.12～3.45ppm,镉0.03～1.10ppm,提示微量元素是影响儿童生长发育重要因素之一。
The content of five trace elements (zinc, iron, copper, manganese and cadmium) in hair of 500 healthy children aged 6 ~ 12 years in Liuzhou Railway was determined by WFX-1E atomic absorption spectrophotometer. The results showed that the contents of five trace elements in hair were not significantly different among different sexes. The contents of zinc, copper and manganese increased with age, but positively correlated with age. However, iron and cadmium were the opposite , Decreased with age, and negatively correlated with age. The authors used the percentile method to calculate the 95% normal range of five trace elements in healthy hair for children in the region: zinc 38.30 to 177.55 ppm, iron 10.49 to 105.71 ppm, copper 0.95 to 38.33 ppm, manganese 0.12 to 3.45 ppm , Cadmium 0.03 ~ 1.10ppm, suggesting that trace elements is one of the important factors that affect children’s growth and development.