厦门市售贝类中氯霉素残留情况调查分析

Investigation and analysis of chloramphenicol residues in shellfish sold in Xiamen

为了解厦门市售常见贝类中氯霉素残留情况,本调查采集了水产品批发市场、超市、养殖场等场地的菲律宾蛤仔(Ruditapes philippinarum)、文蛤(Meretrix meretrix)、牡蛎(Ostrea gigas tnunberg)、缢蛏(Sinonovacula constricta)、贻贝(Mytilus edulis)、泥蚶(Tegillarca granosa)、寻氏肌蛤(Musculus senhousei)、扇贝(Chlamys farreri)共8种贝类169份样品,依据GB/T 20756—2006国家标准建立超高效液相色谱串联质谱法对贝类中的氯霉素残留量进行了检测调查分析。该方法在0.5~20 ng/m L范围内呈良好的线性关系,相关系数R2为0.999 8,检出限为0.1μg/kg,回收率在88%~104%之间。结果表明,169份贝类样品中,氯霉素的总检出率为3.6%(6/169),最高含量为7.05μg/kg,在8种贝类样品中,菲律宾蛤仔(Ruditapes philippinarum)和文蛤(Meretrix meretrix)的检出率较高,分别为7.7%(3/39)和6.7%(2/30)。调查结果显示,厦门市售的贝类中氯霉素残留情况依然存在,相关管理部门应该加强监管、监控,以保障广大消费者的身体健康。

To investigate the chloramphenicol residues of common types of shellfish sold in Xiamen retailer,169 samples were collected from wholesale markets, supermarket and shellfish farms including 8 kinds of shellfish such as Ruditapes philippinarum,Meretrix meretrix,Ostrea gigas tnunberg,Sinonovacula constricta,Mytilus edulis, Tegillarca granosa, Musculus senhousei, and Chlamys farreri. According to the national standard GB/T 20756—2006,chloramphenicol residues in shellfish were determined by UHPLC-MS/MS.Detection ranges of the method were 0. 5 ～ 10 ng/m L,and the correlation coefficient was 0. 999 8. The detection limit was achieved as 0. 1 μg/kg,while the recovery range of chloramphenicol was 88% ～ 104%.The results showed that the detection rate of chloramphenicol in 169 samples was 3. 6%（ 6/169）,and the highest content level was 7. 05 μg/kg. Among the 8 species of shellfish,the detection rate of chloramphenicol in Ruditapes philippinarum and Meretrix meretrix were 7. 7%（ 3/39） and 6. 7%（ 2/30）,which were much higher than other kinds of shellfish. The results of the survey showed that chloramphenicol residues were found in shellfish in the retailer. It is necessary to further strengthen monitoring to guarantee the consumer health.