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目的:探讨幼儿体内微量元素水平及其与身高体重的关系,为科学制订膳食提供依据。方法:对南京市某幼儿园3～6岁幼儿末梢血,采用原子吸收光谱仪进行6种微量元素的检测。结果:203名幼儿Cu、Mg、Fe、Pb微量元素均处于正常值范围,4.4%和3.0%的幼儿有缺Ca和缺Zn的现象;Zn、Fe和Pb含量水平在不同年龄组间差异有统计学意义,且随年龄的增大而升高。多元回归分析显示,幼儿末梢血中Zn、Mg和Pb含量水平与幼儿身高呈正相关。结论:绝大多数幼儿体内微量元素含量正常,Ca和Zn的缺乏率很低,应继续保持现有的饮食结构,但需要重视Zn、Fe和Pb含量随年龄而升高的现象。
Objective: To explore the relationship between trace elements levels in children and height and weight, and to provide scientific basis for the formulation of diet. Methods: The peripheral blood of 3 ~ 6 years old nursery in a kindergarten of Nanjing City was tested by atomic absorption spectrometry for 6 kinds of trace elements. Results: The trace elements of Cu, Mg, Fe and Pb in 203 infants were in the normal range, while 4.4% and 3.0% of infants were lack of Ca and Zn deficiency. The levels of Zn, Fe and Pb in different age groups were Statistical significance, and increased with age. Multiple regression analysis showed that the levels of Zn, Mg and Pb in peripheral blood of young children positively correlated with the height of young children. CONCLUSION: Most young children have normal levels of trace elements, low rates of Ca and Zn deficiency, and continue to maintain the existing diet. However, attention should be paid to the increase of Zn, Fe and Pb contents with age.