重庆市万州区市售鲜辣椒中镉和铬污染现状评价

目的 了解重庆市万州区市售鲜辣椒中镉和铬元素污染情况, 对辣椒食用的安全性进行评价, 为后期进行食品风险预警提供依据。方法 采用石墨炉原子化法测定辣椒中的镉和铬元素的含量, 利用单因子污染指数法和内梅罗指数法对辣椒中重金属镉、铬污染进行评价。结果 20份辣椒样品中镉元素平均检出浓度为(0.094±0.042) mg/kg, 最高值为0.195 mg/kg, 超标率为85%。单项因子污染指数分析显示, 重庆市万州区鲜辣椒属于镉元素的轻度污染范围内。内梅罗指数分析显示, 重庆万州区鲜辣椒属于轻度污染范围内, 且镉元素的单项因子污染指数对内梅罗指数贡献较大。结论 重庆市万州区市售辣椒存在镉元素超标的现象, 可能与土壤中镉元素超标有关。

Evaluation of cadmium and chromium pollution in fresh peppers from Wanzhou district of Chongqing

Objective To understand the pollution of cadmium and chromium in fresh peppers sold in Wanzhou district of Chongqing, and to evaluate the safety of pepper consumption, so as to provide a basis for food risk warning in the later stage. Methods The contents of cadmium and chromium in pepper were determined by graphite furnace atomization method. The pollutions of heavy metal cadmium and chromium in pepper were evaluated by single factor pollution index and Nemero index. Results The average detection concentration of cadmium in 20 pepper samples was (0.094±0.042) mg/kg, the highest value was 0.195 mg/kg, and the over-standard rate was 85%. The single factor pollution index analysis showed that fresh peppers in Wanzhou District of Chongqing were belonged to the mild cadmium pollution. The Nemero index analysis showed that fresh peppers in Wanzhou district of Chongqing were belonged to mild pollution, and the single factor pollution index of cadmium contributed a lot to the Nemero index. Conclusion There is a phenomenon of excessive cadmium in peppers sold in Wanzhou district, Chongqing, which may be related to excessive cadmium in soil.