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目的了解宝鸡市部分市售谷物铅污染状况,为食品安全评估提供依据。方法采集宝鸡市农贸市场及超市102份谷物为监测对象,用石墨炉原子吸收法检测铅含量,以危害指数(HQ)进行健康风险评估,用蒙特卡洛法预测摄入风险。结果 102份样本铅含量均值(37.7±29.9)!g/kg。大米铅含量比小麦粉和杂粮低,小麦粉和杂粮铅含量类似。女性HQ均值0.07,95%位数0.21;男性分别为0.08、0.21,均<1,均不存在摄入风险。结论宝鸡市谷物铅超标率低,摄入风险低,但仍应加强管理和监督,降低居民因谷物而引起的铅摄入风险。
Objective To understand the status of lead contamination on some commercial grains in Baoji City and provide the basis for food safety assessment. Methods A total of 102 cereals were collected from farmers’ markets and supermarkets in Baoji City. The lead content was determined by graphite furnace atomic absorption spectrometry. The health risk was evaluated by hazard index (HQ), and the intake risk was predicted by Monte Carlo method. Results The average lead content of 102 samples (37.7 ± 29.9) g / kg. Lead content in rice is lower than wheat flour and miscellaneous grains, similar to lead content in wheat flour and miscellaneous grains. Female HQ mean 0.07, 95% median 0.21; males were 0.08,0.21, all <1, there is no risk of intake. Conclusion In Baoji City, the excess of lead in grains is low and the risk of intake is low. However, the management and supervision should be strengthened so as to reduce the risk of lead intake caused by cereals.