2013年鹤山市市售大米镉含量的调查分析

Investigation and analysis on cadmium content of commercially available rice in Heshan City in 2013

目的了解广东省鹤山市市售大米中镉污染状况，为食品安全监督提供依据。方法在鹤山市农贸市场、粮食加工厂、粮油店、粉面加工厂、超级市场随机抽样采购大米样品，采用湿式消解法进行样品处理，石墨炉原子吸收分光光度法进行镉含量测定。结果共采集市售大米150份，其镉含量为0．025~0．432mg／kg，其中14份镉含量超过国家标准（0．2mg／kg），总体超标率为9．3％（14／150）。结论2013年鹤山市市售大米存在一定程度的镉污染，建议加大监管力度，采取相应控制措施。

[Objective] To investigate the cadmium contamination of commercially available rice in Heshan City of Guangdong Province, provide the basis for the supervision of food safety. [ Methods ] The rice samples were randomly collected from farmer markets, grain processing factories, grain and oil stores, flour mill and supermarkets in Heshan City. The samples were processed by using wet digestion method, and the cadmium content was determined by the graphite furnace atomic absorption spectrophotometry. [Results] A total of 150 rice samples were collected, and the cadmium contents were between 0.025 mg/kg and 0.432 mg/kg. The cadmium content in 14 samples was higher than the national standard （0.2 mg/kg）, with the total exceeding standard rate of 9.3% （14/150）. [ Conclusion] Cadmium contamination has been found in commercially available rice in Heshan City in 2013. It is necessary to strengthen supervision, and take relevant prevention and control measures.