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于1987年9～10月份,对宾县托幼机构102名6月～3岁小儿进行采发,检测六种必需元素。结果表明,发锌平均值与年龄、性别有极显著差异;发铁与疾病发生有显著差异;钙、镁、铜与生长发育亦有显著性差异。
From September to October 1987, 102 children aged 6 months to 3 years old in Binxian nursery school were collected and tested for six essential elements. The results showed that there was a significant difference between the mean value of hair zinc and age and sex; the difference between hair iron and disease was significant; and there was also significant difference between calcium, magnesium, copper and growth and development.