【摘要】 为调查广州市售水产品中全氟烷基化合物（perflurorinated alkylated substances,PFASs）的污染特征,采集鱼类、甲壳类和头足类等6类254个样品,采用超高效液相色谱串联质谱法测定23种PFASs的含量.不同种类样品的PFASs总检出率为93. 5%～100%,鱼类和甲壳类的含量较高.鱼类中检出了13种PFASs组分,但鲍鱼仅检出6种,种类差异明显.全氟辛烷磺酸（PFOS）和全氟辛烷羧酸（PFOA）的检出率最高,分别为76. 8%和75. 6%,为PFASs的特征污染组分. PFOS的含量为0. 19～192. 27μg·kg^-1,明显高于其它组分,污染贡献率达35. 15%.与鱼类、甲壳类、头足类和加工制品中PFOS的污染贡献率最高不同,海珍品中污染贡献率最高的是全氟丁酸（PFBA）,样品组分污染特征表现出明显的种类差异性.风险评价结果表明,广州市售水产品中PFOA和PFOS对人的潜在健康风险低.更多还原

【Abstract】 To investigate the contamination characteristics of PFASs in aquatic products,254 samples belonging to 6 species,including fishes,crustaceans,cephalopods,etc.,were collected from Guangzhou,and 23 PFASs were determined by UPLC-MS/MS. The total detection rates of the various sample species ranged from 93. 5% to 100%,and the concentrations of PFASs were relatively higher in the fishes and crustaceans. 13 PFAS components were detected in the fish samples,but only 6 PFAS components were detected in haliotis samples,and obvious differences were observed among the different species sampled. PFOA and PFOS were the predominant pollutants,with detection rates of 75. 6% and 76. 8%. The concentrations of PFOS were in the range of 0. 19-192. 27 μg·kg^-1,which were obviously higher than those of the other PFAS components,and their total contamination contribution factor reached the highest percentage of 35. 15%. PFOS was a major contributing factor to the PFAS contamination of fishes,crustaceans,siphonopods,and processed products; however,the predominant pollutant in Haliotis samples was PFBA. The results of the risk assessment indicated that the concentrations of PFOA and PFOS would not give rise to timely harm to the consumers.更多还原