【摘要】 目的　了解学龄前儿童机体铁的营养状况及膳食影响因素。方法　膳食调查采用称重记帐法 ,连续调查 5d。发铁含量测定采用原子吸收光谱法。结果　膳食中铁的摄入量为 2 2 .0 1mg/人日 ,达膳食营养供给量 (RDA)的 2 2 0 % ,其中植物性铁占 82 .48% ,动物性铁仅占 1 7.52 %。发铁含量均值为 ( 2 6.1 9± 1 2 .42 ) μg/g ,发铁不足率为 33%。 结论　被调查对象铁营养状况不良 ,铁的食物来源不合理 ,应增加血红素铁、维生素C及维生素B2 的摄入量 ,以提高铁的生物利用率。更多还原

【Abstract】 Objective To understand iron nutritional status of preschool children and its dietary influencing factors. Methods Weighting and recording methods were used to dietary survey for 5 days. Hair iron contents of preschool children were determined by atom absorption spectrometer. Results The intake of iron was 22.01mg per person per day and accounted for 220% of RDA, 82.48% of dietary iron was from plant foods, and 17.52% was from animal foods. The average level of hair iron was 26.19±12.42 μg/g, and the insufficient rate of hair iron accounted for 33%.Conclusion Iron nutritional status of surveyed children was poor, and food sources of iron were unreasonable. It suggested that the intakes of heme iron, ascorbic acid and riboflavin should be increased to improve iron bioavailability.更多还原