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目的：了解学龄前儿童发锌、发钙水平及其相关影响因素。方法：采用原子吸收光谱法测定学龄前儿童发锌、发钙含量，采用称重法进行为期5天膳食调查。结果：发锌、发钙含量分别为121．8±49．50μg／和792．25±432．32μg／g；锌、钙不足率分别为37．4％和39．2％；发锌含量正常与不足两者间发钙水平（846．81±481．02μg／g、683．06±240．32μg／g）及钙不足率（31．3％和52．5％）均有显著性差异。锌、钙的每人日膳食摄入量分别占RDA的95．33％、42．35％；植物性食物来源分别为69．44％、67．06％。结论：锌、钙的食物来源不合理，锌可能与钙的代谢有关，在补钙时应注意同时补锌。
Objective: To understand preschool children hair zinc, calcium levels and its related factors. Methods: Determination of zinc and calcium in preschool children by atomic absorption spectrometry. The five-day dietary survey was conducted by weighing method. Results: The contents of hair zinc and hair calcium were 121.8 ± 49.50μg / g and 792.25 ± 432.32μg / g, respectively. The deficiencies of zinc and calcium were 37.4% and 39.2% respectively. The zinc content was normal There were significant differences between the two groups in the level of calcium (846.81 ± 481.02μg / g, 683.06 ± 240.32μg / g) and calcium deficiency (31.3% and 52.5%). Dietary intake of zinc and calcium per person per day accounted for 95.33% and 42.35% of the RDA respectively; and the source of plant foods was 69.44% and 67.06% respectively. Conclusion: The sources of dietary zinc and calcium are unreasonable. Zinc may be related to the metabolism of calcium. At the same time, it should pay attention to the simultaneous zinc supplementation.