童发中Ca,Fe,Cu,Zn的测定及其与儿童健康的关系

DETERMINATION OF Ca,Fe,Cu AND Zn IN CHILDRENS HAIRSAND THEIR RELATIONSHIP TO CHILDRENS HEALTH

童发经硝化后，制成溶液纸薄样，用Ｘ射线荧光光谱法联测儿童头发中的Ｃａ，Ｆｅ，Ｃｕ，Ｚｎ含量，确定了健康儿童头发中的这些元素的正常值。随着年龄的增大，Ｃａ，Ｃｕ，Ｚｎ含量应逐步增多，但桂林市被测的０７～３岁儿童发中Ｃａ，Ｆｅ，Ｃｕ，Ｚｎ呈下降趋势，并低于正常值下限的比例达４２％～３５％，尤其是缺Ｚｎ者比例高达３４７％，男孩缺Ｚｎ多于女孩。利用发中的Ｃａ，Ｆｅ，Ｃｕ，Ｚｎ含量可辅助诊断儿童的智商（智力）和学习能力及发育方面的疾病。该方法快速、简便、灵敏、准确。

Childrens hairs have made the thin dissolved paper sample and Ca,Fe,Cu and Zn contents in their hairs have been determined by using X-ray fluorescence spectrometry after their nitrification.The normal values of Ca,Fe,Cu and Zn in healthy babys and Childrens hairs.Ca,Fe,Cu and Zn contents increase gradually with an increase on their age.However,Ca,Fe,Cu and Zn trend to a decrease in determined Childrens hairs from 07 to 3 age in Guilin,and are greatly lower normal values,espeacially,Zn-deficient Children are 347% and boys are more deficient than girls.Therefore,intelligence test,study ability and prevention of disease of children may be diagnosed by using Ca,Fe,Cu and Zn contents in their hairs.This method is fast,simple,sensitive and accurate.