绍兴市水产品中6种重金属调查

发布时间：2018-07-15 21:44

【摘要】：为了解绍兴市常见水产品中铅、镉、镍、铬、总汞和总砷的污染水平,于2015年在绍兴市的农贸市场、超市等随机采集6类343份水产品,采用国家标准方法检测铅、镉、镍、铬、总汞和总砷的含量,按GB 2762—2012《食品中污染物限量》评价检测结果,采用单因子污染指数法和金属污染指数法评价污染程度。结果显示,6类343份水产品中,铅、镉、镍、铬、总汞和总砷的中位数分别为0.036、0.012、0.041、0.062、0.012和0.220 mg/kg,镉的超标率为3.79%(13/343),其余重金属均未超标。海水甲壳类中镉含量中位数为0.027 mg/kg,超标率为15.79%(12/76),单因子污染指数中位数为0.054;其中梭子蟹中镉含量中位数为0.30 mg/kg,超标率为44.44%(12/27),单因子污染指数中位数为0.60。金属污染指数最高的为海水双壳类(0.110)最低的为淡水鱼类(0.021)。提示2015年绍兴市水产品中重金属总体污染水平不高,但梭子蟹中镉污染较严重,建议继续加强监测并分析污染来源。
[Abstract]:In order to understand the pollution level of lead, cadmium, nickel, chromium, total mercury and total arsenic in the common aquatic products in Shaoxing, 6 kinds of 343 aquatic products were collected at the market of Shaoxing in 2015, and the contents of lead, cadmium, nickel, chromium, total mercury and total arsenic were detected by the national standard method, and the results were evaluated according to the limit of pollutants in GB 2762 - 2012< food. The results showed that the median of lead, cadmium, nickel, chromium, total mercury and total arsenic were 0.036,0.012,0.041,0.062,0.012 and 0.220 mg/kg respectively in 6 kinds of 343 aquatic products. The excess rate of cadmium was 3.79% (13/343) and the other heavy metals were not exceeding the standard. The median cadmium content in sea crustaceans was median. For 0.027 mg/kg, the rate of exceeding the standard was 15.79% (12/76), the median of single factor pollution index was 0.054, the median of cadmium in the shuttle crab was 0.30 mg/kg, the exceeding standard was 44.44% (12/27), the median of the single factor pollution index was the lowest of the 0.60. metal pollution index (0.110) as the lowest freshwater fishes (0.021). It suggested Shaoxing in 2015. The overall pollution level of heavy metals in aquatic products is not high, but cadmium pollution in Portunus crabs is serious. It is suggested that monitoring and analysis of sources of pollution should be strengthened.
【作者单位】：绍兴市疾病预防控制中心理化检验科;
【分类号】：R155.5

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