浙江省7个地区冬笋中铅、镉、铬、砷、汞的含量及风险评价

发布时间：2017-12-31 23:20

本文关键词：浙江省7个地区冬笋中铅、镉、铬、砷、汞的含量及风险评价　出处：《食品安全质量检测学报》2016年12期 　论文类型：期刊论文

【摘要】：目的评价浙江省7个地区冬笋中Pb、Cd、Cr、As、Hg 5种重金属的污染程度。方法采用石墨炉原子吸收光谱法和原子荧光光谱法测定84个冬笋样品中Pb、Cd、Cr、As、Hg 5种重金属的含量,并与国家标准中的限量值进行比较,通过计算单因子污染指数和尼梅罗综合污染指数评价冬笋的污染状况。结果所测定的84个冬笋样品中,Pb、Cd、Cr、As、Hg的单因子污染指数平均值分别为0.96、0.59、0.10、0.01、0.03;尼梅罗综合污染指数评价分析的结果表明,67份样品处于未污染状态,占总样本的79.8%;8份样品处于警戒范围内,占总样本的9.5%;8份样品处于轻污染状态,占总样本的9.5%;1份样品受到中度污染,占总样本的0.2%。结论浙江省所采样地区的冬笋样品中的重金属污染风险主要来自Pb,其次是Cd,Cr、As和Hg的污染风险最低。
[Abstract]:Objective to evaluate the content of Pbcdcdcncas in winter bamboo shoots in 7 regions of Zhejiang Province. Methods the contents of 5 heavy metals in 84 winter bamboo shoots were determined by graphite furnace atomic absorption spectrometry (GFAAS) and atomic fluorescence spectrometry (AFS). Compared with the limited value of national standard, the pollution status of winter bamboo shoot was evaluated by calculating the single factor pollution index and the comprehensive pollution index of Nimero. The average value of single factor pollution index of Cr ~ (2 +) Ash ~ (2 +) Hg is 0.96 ~ (0.59) ~ (0.10) ~ (0.01) ~ (0.03); The results of Nimero comprehensive pollution index evaluation showed that 67 samples were in uncontaminated state, accounting for 79.8% of the total samples. Eight samples were in the alert range, accounting for 9.5% of the total samples. Eight samples were in the condition of light pollution, accounting for 9.5% of the total samples. One sample was moderately polluted, accounting for 0.2% of the total sample. Conclusion the pollution risk of heavy metal in winter bamboo shoot samples in Zhejiang Province is mainly from PBB, followed by Cdcr. As and Hg have the lowest pollution risk.
【作者单位】：杭州市富阳区食品安全检验检测中心;
【分类号】：R155.5
【正文快照】： 竹笋是一种含高蛋白、低脂肪、低淀粉、多纤维的食品,它的肉质细嫩,松脆爽口,古往今来被视为菜中珍品。经常食用竹笋不仅能促进肠道蠕动,帮助消化、去积食、防便秘,而且对高血压、冠心病、动脉管硬化和糖尿病有一定的食疗作用[1]。同时竹笋含有丰富的矿物元素和人体所需的18种

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