论文部分内容阅读
目的 掌握中山市市售猪肉(含猪内脏)受禁用化学药品污染的现状,提出相应的预防和控制措施。方法 采用分层按比例抽样的方法,分别对中山市的港口镇、三乡镇、沙溪镇、小榄镇、石岐城区共80份市售猪肉(含猪内脏)进行调查,采用气质联用法(GC/MS)检测,鉴别其中含有禁用化学药品的成分。结果 此次调查80个样品共检出禁用化学药品有3种,残留阳性样品5个,总残留阳性率为6．3%。其中盐酸克仑特罗阳性检出率为5．0%,N,N－二甲基硫脲和甲巯基咪唑阳性检出率均为13%。盐酸克仑特罗阳性样品全部来自小榄镇,N,N－二甲基硫脲和甲巯基咪唑阳性样品则来自石岐城区,港口镇、三乡镇、沙溪镇均未检出阳性样品。结论 中山市市售猪肉(含猪内脏)残留的禁用化学药品主要是盐酸克仑特罗,但也检出了N,N－二甲基硫脲和甲巯基咪唑。禁用化学药品只在部分区域内检出。因此首要任务是加强对盐酸克仑特罗的监测,同时也要警惕其它禁用化学药品的存在。在对全市的生猪市场进行监测管理时,应着重管理存在问题的地区。
Objective To grasp the status quo of the banned chemical contamination of pork on the market in the city of Zhongshan (including pig offal) and put forward the corresponding prevention and control measures. Methods A total of 80 commercially available pork (including pig offal) in port town, Sanxiang town, Shaxi town, Xiaolan town and Shiqi district of Zhongshan were investigated by stratified and proportionate sampling method. (GC / MS) test to identify the ingredients containing banned chemicals. Results There were 3 banned chemicals and 5 residual positive samples in 80 samples. The total positive rate was 6.3%. The positive detection rate of clenbuterol hydrochloride was 5.0%, and the positive detection rates of N, N-dimethylthiourea and methylmercaptoimidazole were both 13%. Positive samples of Clenbuterol hydrochloride were all from Xiaolan Town. Positive samples of N, N-dimethylthiourea and methylmercaptoimidazole were all from positive samples in Shiqi Town, Port Town, Sanxiang Town and Shaxi Town. Conclusion The banned chemicals in the pork market (including pig offal) in Zhongshan city are mainly clenbuterol, but N, N-dimethylthiourea and methylmercaptoimidazole are also detected. Banned chemicals are only detected in some areas. Therefore, the primary task is to strengthen the monitoring of clenbuterol, while also guarding against the existence of other banned chemicals. In the monitoring and management of the city’s live pig market, emphasis should be placed on managing areas where problems exist.