2018~2019年深圳市米面及其制品中重金属污染状况的监测与分析

Monitoring and analysis of heavy metal pollution in rice, flour and their products in Shenzhen from 2018 to 2019

中文关键词:  深圳  米  面  重金属  风险监测

英文关键词:Shenzhen  rice  flour  heavy metal  risk monitoring

中文摘要:

      目的 调查2018~2019年深圳市米面及其制品中重金属污染状况。方法 在深圳市10个区采集米面及其制品, 按照GB 5009.268-2016《食品安全国家标准食品中多元素的测定》对所采集的大米及米制品进行铅和镉的检测; 检测面及面制品中铅、镉、总汞和总砷含量。结果 320份米面及其制品中, 4份米制品镉超标, 超标率1.25%, 其他监测项目均无超标, 但米及其制品中镉检出率61.88%; 面及其制品中镉检出率98.13%, 均高于50%。不同类别样品间检出率比较无显著性差异。2018年和2019年米及米制品的铅和镉检出率比较发现, 铅、镉2年检出率差异均具有显著性(P<0.05)。而面及面制品2年4个监测项目的检出率差异均无统计学意义。结论 目前深圳市米面及其制品中铅、镉、总汞和总砷等金属污染状况依然存在, 其中镉污染情况较为普遍, 具有一定的食品安全隐患, 应该引起重视, 加强监管。

英文摘要:

      Objective To investigate the heavy metal pollution in rice, flour and their products in Shenzhen from 2018 to 2019. Methods Rice, flour and their products were collected in 10 districts of Shenzhen city. According to GB 5009.268-2016 National food safety standard-Determination of multiple elements in food, the collected rice and rice products were tested for lead and cadmium, and the flour and flour products were tested for lead, cadmium, total mercury and total arsenic. Results Among the 320 pieces of rice, flour and their products, 4 pieces of rice products exceed the cadmium standard, with the exceeding rate of 1.25%. No other monitoring items exceed the standard, but the detection rate of cadmium in rice and its products was 61.88%, the detection rate of cadmium in flour and flour products was 98.13%, both higher than 50%. There was no significant difference in detection rate among different types of samples. Compared with the detection rates of lead and cadmium in rice and rice products in 2018 and 2019, there were significant differences in the 2-year detection rates of lead and cadmium (P<0.05). There was no significant difference in the detection rate of surface and surface products in 4 monitoring items in 2 years. Conclusion At present, the pollution of lead, cadmium, total mercury, total arsenic and other metals in rice flour and their products still exists in Shenzhen. Among them, cadmium pollution is relatively common and has certain hidden danger of food safety, so attention should be paid to it and supervision should be strengthened.