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作者对武汉市210例7～12岁健康儿童头发和血清中锌、铜、铁、锰、铬,硒、镉七种微量元素和镁的含量及其影响因素进行了研究,其中硒采用阴极溶出伏安法测定,其它元素采用原子吸收光谱法。结果表明,发铜男低女高,性别差异显著;发锌和锰与年龄呈显著正相关,发镉则呈负相关,这种年龄差异反映出各年龄对微量元素的需要量不同;学龄期组与学龄前期组和青少年组比较,发锌随年龄增加而增加,发铬和硒随年龄增加而减少。逐步回归分析结果表明,头发和血清微量元素含量之间有一定关系,其中发锌与血清锌呈显著正相关;身高与发锰、发铁和发锌以及体重与血清铜之间存在一定的回归关系,提示这些元素对身高和体重发育有一定影响。
The authors studied the contents and influential factors of seven trace elements and magnesium in zinc, copper, iron, manganese, chromium, selenium and cadmium in hair and serum of 210 healthy children aged from 7 to 12 years in Wuhan. Among them, Voltammetric determination, other elements using atomic absorption spectrometry. The results showed that there was a significant gender difference in hair-bearing male and female; hair zinc and manganese were positively correlated with age and cadmium were negatively correlated, this age difference reflected the different needs of trace elements in different ages; Compared with preschool group and adolescent group, hair zinc increased with age, hair chromium and selenium decreased with age. Stepwise regression analysis showed that there was a certain relationship between hair and serum trace elements, hair zinc and serum zinc was positively correlated; there is a certain regression between height and hair manganese, hair iron and hair zinc and body weight and serum copper Relationship, suggesting that these elements have a certain impact on height and weight development.