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目的了解高校学生膳食铅摄入量与膳食摄入状况之间的关系,为预防铅中毒提供参考。方法采用双份饭法,收集广东省某高校某班10名学生(男女各半)连续7 d摄入的全部食物作为样品,共70份。经匀浆处理后得到36个实验样品,用火焰原子吸收光谱法测定样品的铅含量。结果男生膳食铅摄入量为568.64μg/d,女生为455.51μg/d;学生膳食摄入状况与膳食铅摄入量之间的关联性从大到小依次为摄入鱼肉的量(R=0.844 9),摄入鸡肉的量(R=0.818 9),摄入瘦肉的量(R=0.617 0),膳食总量(R=0.574 3),摄入豆制品量(R=0.569 8),摄入鸡蛋的量(R=0.480 3)。结论学生膳食铅摄入量均超出了相应的允许摄入限量,膳食铅摄入量与膳食摄入总量、性别和摄入食品种类有关。
Objective To understand the relationship between dietary lead intake and dietary intake among university students and provide references for the prevention of lead poisoning. Methods A total of 70 food samples of 10 students (half male and female) in a certain class in a certain university in Guangdong Province were collected for 7 days. Thirty-six experimental samples were obtained after homogenization, and the content of lead in the samples was determined by flame atomic absorption spectrometry. Results Dietary lead intake of boys was 568.64μg / d and that of girls was 455.51μg / d. The correlation between dietary intakes and dietary lead intake of boys was in the order of intake of fish meat (R = (R = 0.8179), total dietary intake (R = 0.5743) and the amount of soy products consumed (R = 0.569 8) , The amount of eggs ingested (R = 0.480 3). Conclusion Students’ dietary lead intake exceeded the corresponding allowable intake limit. Dietary lead intake is related to total dietary intake, sex and food intake.