西北太平洋黑潮延伸体海域全氟/多氟烷基物质的污染特征与生态风险评价  

Distribution Source Analysis and Ecological Risk Assessment of Perfluoro/Polyfluoroalkyl Substances in the Typical Areas of the Northwest Pacific Ocean

作　　者：田国鹏 袁函宇 王昊[1] 刘霞[1] 岳同涛 代燕辉[1] 赵建[1] Tian Guopeng;Yuan Hanyu;Wang Hao;Liu Xia;Yue Tongtao;Dai Yanhui;Zhao Jian(Institute of Coastal Environmental Pollution Control,Key Laboratory of Marine Environment and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学海洋环境与生态教育部重点实验室近海环境污染控制研究所,山东青岛266100

出　　处：《中国海洋大学学报(自然科学版)》2025年第5期20-28,共9页Periodical of Ocean University of China

基　　金：中央高校基本科研业务费项目(202241011,202172001);国家自然科学基金项目(42277200);山东省“泰山学者”计划项目(tsqnz20221109)资助。

摘　　要：全氟/多氟烷基物质(per-and polyfluoroalkyl substances,PFASs)在海洋中广泛存在,并导致生物毒性,但其在远海中的污染特征还不清楚。在西北太平洋黑潮延伸体海域(20~300 m)共采集了22份海水样品,使用三重四极杆液相色谱质谱联用仪(LC-MS/MS)共检出了24种PFASs,4站(D1、D4、D5、D6)ΣPFASs的中位数浓度分别为4.33、4.15、4.49、4.22 ng·L^(-1),全氟辛酸(perfluorooctanoic acid,PFOA)和全氟辛烷磺酸(perfluorooctane sulfonate,PFOS)为最主要的PFASs。此外,还检出了8种前体物质和新型PFASs。在垂直剖面上,ΣPFASs浓度呈先增加后下降的趋势。通过比值法分析了其潜在来源,发现该区域PFASs可能来源为洋流的输送。风险熵值法结果显示,采样点PFASs的浓度尚未达到产生生态风险的浓度水平。本文研究结果可为PFASs的海洋生态风险评价及新污染物的管控提供重要的科学依据。Perfluoro/polyfluoroalkyl substances(PFASs)widely distributed in the ocean and caused toxicity to aquatic organisms,but their distribution in the remote ocean remains largely unknown.In order to investigate the distribution of PFASs in the vertical water column profiles in the typical areas of the northwest Pacific Ocean,22 seawater samples were collected from four stations(D1,D4,D5,D6),and 29 target PFASs were detected using triple quadrupole liquid chromatography-mass spectrometry(LC-MS/MS).Additionally,possible sources of the PFASs were further analyzed,and the ecological risk assessment was conducted using Entropic Value-at-Risk method.The results showed that 24 PFASs were detected in the seawater samples,and the medianΣPFASs concentrations of the 4 stations(D1,D4,D5,D6)were 4.33,4.15,4.49 and 4.22 ng·L^(-1).Perfluorooctanoic acid(PFOA)and perfluorooctane sulfonate(PFOS)were the most predominant PFASs,and eight precursor and emerging PFASs were also identified.In the vertical profile,ΣPFASs concentration increased at first and then decreased with the depth of seawater.Ratio method analysis found that the high concentration of PFASs in this region possibly resulted from the transport of the currents.Ecological risk assessment revealed that the current concentration of PFASs had not reached the risk threshold to the environment or human health.

关 键 词：全氟/多氟烷基物质 垂直剖面 分布 源解析 生态风险 

分 类 号：X131.2[环境科学与工程—环境科学]