四川省市售食品中双酚A和双酚S检测结果分析

Analysis on the Test Results of Bisphenol A and Bisphenol S in the Market Foodstuffs From Sichuan Province

目的 了解四川省区域内市售食品中双酚A（BPA）和双酚S（BPS）的浓度,为食品污染物的监测和控制提供科学依据。方法 采用超高效液相色谱-四级杆串联质谱法（HPLC-MS/MS））对四川境内在售的414份食品进行BPA和BPS监测分析。样品包含罐头、鱼肉、畜禽肉、饮料、谷物（大米、小麦）,共5类。结果 本次检测的414份食品中295份检测出BPA,检出率71. 3%,浓度为小于检出限到173μg/kg; 98份检测出BPS,检出率23. 7%,浓度为小于检出限到54. 2μg/kg。罐头类食品是BPA检出浓度最高的食品类别（检出率99. 2%,浓度均值：34. 7μg/kg）;肉类食品是BPS检出浓度最高的食品类别（检出率：44. 7%,浓度均值：2. 14μg/kg）。结论 所监测的食品中大部分都已被BPA污染,罐头类食品污染最为严重;作为BPA替代品的BPS在罐头类食品和谷物中的含量很低,但其在肉类食品中的污染水平与BPA相当。

Objective To investigate the concentration of bisphenol A （BPA） and bisphenol S （BPS） in the market foodstuffs from Sichuan province, in order to provide the scientific evidence for monitoring and control of food contaminant. Methods A total of 414 samples of market foodstuffs from Sichuan province were analyzed for BPA and BPS, using high - performance liquid chromatography - tandem mass spectrometry （ HPLC - MS/ MS）. The food samples included canned food, fish, meat＆poultry, beverage and cereal （rice, wheat）. Results BPA was found in 295 food samples with the detection rate of 71.3 % and the concentration was below the limit of detection （LOD） to 173 μg/kg. BPS was found in 98 food samples with the detection rate of 23.7% and the concentration was below the limit of detection （LOD） to 54.2 μg/kg. The highest mean concentration of BPA was found in the canned food. The detection rate and the mean concentration was 99.2% and 34.7 μg/kg, respectively. The highest mean concentration of BPS was found in fish and meat＆poultry. The detection rate and the mean concentration was 44.7% and 2. 14 μg/kg, respectively. Conclusion A majority of the monitored foodstuffs were contaminated with BPA, of which the canned food were the most serious polluted. BPS, as a BPA substitute, its concentration was quite low in canned food and cereal, but the level of its contamination in meat product was close to that of BPA.