State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences , Beijing 100085, China.
Institute of Environmental Science and Engineering, Qingdao University of Technology , Qingdao 266520, China.
Environ Sci Technol. 2017 Dec 19;51(24):14173-14181. doi: 10.1021/acs.est.7b04332. Epub 2017 Dec 8.
The existence of more than 3000 per- and polyfluoroalkyl substances (PFASs) on the global market has prompted the identification and hazard characterization of hitherto unknown PFASs. In the present study, a novel PFAS, sodium p-perfluorous nonenoxybenzenesulfonate (OBS), was identified using Orbitrap MS/MS in water samples around a suspected application area, Daqing Oilfield, China. The peak OBS concentration was 3.2 × 10 ng/L in a sample taken near the oil well with the longest production history in Daqing. The concentrations of OBS and contribution to the sum of PFASs in surface waters displayed considerable variation among the three sampling areas (mean levels at 6.9, 50, and 5.6 × 10 ng/L with mean percentages at 9.8%, 45%, and 69% in the background, new and old oilfield areas respectively) confirming that the density of oil wells and the oil production history are important factors influencing OBS contamination in the studied areas. A preliminary assessment of acute toxicity and environmental fate indicates that OBS exhibits similar toxicity and environmental persistence to perfluorooctanesulfonic acid (PFOS). The widespread occurrence of OBS, in conjunction with its potential hazard properties, underscores the need to further study on the bioaccumulation and potential for human exposure.
全球市场上存在超过 3000 种全氟和多氟烷基物质 (PFAS)，这促使人们对迄今为止未知的 PFAS 进行了识别和危害特征描述。在本研究中，在中国大庆油田一个疑似应用区域的水样中，使用轨道阱质谱/质谱联用仪 (Orbitrap MS/MS) 鉴定出了一种新型 PFAS，即过氟壬基苯磺酸钠 (OBS)。在大庆生产历史最长的油井附近采集的水样中，OBS 的浓度峰值为 3.2×10ng/L。OBS 的浓度及其对 PFASs 总和的贡献在三个采样区域之间存在显著差异（背景、新油田和老油田区域的平均水平分别为 6.9、50 和 5.6×10ng/L，平均百分比分别为 9.8%、45%和 69%），这证实了油井密度和采油历史是影响研究区域 OBS 污染的重要因素。对急性毒性和环境归宿的初步评估表明，OBS 表现出与全氟辛烷磺酸 (PFOS) 相似的毒性和环境持久性。OBS 的广泛存在及其潜在的危害特性，强调了需要进一步研究其生物累积性和人类暴露的潜在风险。
