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目的了解丰台区批发市场销售的鱼类中孔雀石绿、结晶紫及其代谢物隐性孔雀石绿、隐性结晶紫的残留情况。方法 78份样品来自丰台区两大水产批发市场,共22个品种,采用超快速液相色谱-串联质谱对孔雀石绿、结晶紫及其代谢物的残留量进行检测。结果对22个鱼种78份样品进行孔雀石绿和结晶紫检测,样品中检出含有隐性孔雀石绿的共计1个鱼种4份样品,检出率为5.1%,总LMG含量为12.2μg/kg~45.2μg/kg。结晶紫及其代谢物未检出。结论批发市场销售的鱼类中孔雀石绿滥用现象仍然存在,需要有关监管部门加大打击滥用MG的力度,确保鱼类产品的卫生安全。
Objective To understand the residual malachite green, crystal violet and its metabolite recessive malachite green and recessive crystal violet sold in the wholesale market of Fengtai District. Methods Totally 78 samples were obtained from two major aquatic products wholesale markets in Fengtai district. The residues of malachite green, crystal violet and their metabolites were detected by ultra-fast liquid chromatography-tandem mass spectrometry. Results A total of 78 samples of 22 species were tested for malachite green and crystal violet. A total of 4 samples of 1 species were detected with recessive malachite green, the detection rate was 5.1% and the total LMG content was 12.2 μg / kg ~ 45.2 μg / kg. Crystal violet and its metabolites were not detected. Conclusion The phenomenon of abuse of malachite green in the fish market still exists in the wholesale market, requiring the relevant regulatory authorities to step up their efforts to combat the abuse of MG and ensure the hygiene and safety of fish products.