南宁市市售鸡、鸭、猪肝中铅污染状况的调查分析

Investigation and analysis on state of lead pollution of chicken,duck and pig liver on Nanning market

目的:了解南宁市市售鸡、鸭、猪肝中铅污染状况。方法:随机采集南宁市各农贸集市出售的鸡、鸭、猪肝,用国标法GB/T5009.12-2003,湿法消化,二硫腙比色法检测。结果:在102份样品中,铅检出率为76.9%,平均含量为0.041 mg/kg;其中鸡肝含量为0.037 mg/kg,鸭肝含量为0.028 mg/kg,猪肝含量为0.059 mg/kg,猪肝与鸡肝含量有显著性差异(t=2.37,P<0.05),猪肝与鸭肝含量有非常显著性差异(t=5.59,P<0.01)。结论:南宁市市售鸡、鸭、猪肝中铅含量较低,污染不严重。

Objective： To know the state of lead pollution about chicken,duck and pig livers on Nanning market.Methods：We randomly sampled chicken,duck and pig livers on Nanning market,detected them by dithizone colorimetry,wet digestion,according to national standard GB/T5009.12-2003.Results：In 102 samples,lead positive rate is 76.9%,average content is 0.041 mg/kg.The average content of chicken livers is 0.037 mg/kg,which of duck is 0.028 mg/kg,pig is 0.059 mg/kg.There is significant difference between pig and chicken livers（t=2.37,P〈0.05）,very significant difference between pig and duck livers（t=5.59,P〈0.01）.Conclusion：The level of lead content in chicken,duck,pig livers on Nanning market is low.Pollution condition is not severe.