Li Yingming, Xiong Siyuan, Hao Yanfen, Yang Ruiqiang, Zhang Qinghua, Wania Frank, Jiang Guibin
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China.
J Hazard Mater. 2022 Jul 15;434:128872. doi: 10.1016/j.jhazmat.2022.128872. Epub 2022 Apr 6.
Concentrations of seven organophosphate ethers (OPEs) were quantified in passive air samples deployed for eight consecutive one-year periods from August 2011 to August 2019 at seven sampling sites in the area of Ny-Ålesund, Svalbard, Arctic. Non-chlorinated and chlorinated OPEs were approximately equally abundant and the mean atmospheric concentration for the sum of OPEs was around 300 pg/m. Levels of OPEs were two orders of magnitude higher than those of polybrominated diphenyl ethers in the sampling regions, likely a result of efficient long-range transport and higher environmental release rates. For the two most abundant compounds, tris(2-chloroethyl) phosphate and tris-n-butyl phosphate, increasing temporal trends in atmospheric concentrations were observed, with estimated doubling times of 2.9 and 4.2 years, respectively. Slightly elevated OPE levels at two sampling sites in the vicinity of a research station and the local airport suggest the possible influence of local contamination sources. Re-volatilization from glaciers may also influence levels of OPE in the Arctic atmosphere.
2011年8月至2019年8月期间，在北极斯瓦尔巴群岛新奥尔松地区的7个采样点连续8个为期一年的时段内采集了被动空气样本，对其中7种有机磷酸酯醚（OPEs）的浓度进行了定量分析。非氯化和氯化OPEs的含量大致相当，OPEs总量的平均大气浓度约为300 pg/m。采样区域内OPEs的含量比多溴二苯醚高出两个数量级，这可能是高效长距离传输和较高环境释放率的结果。对于两种含量最高的化合物，即磷酸三（2-氯乙基）酯和磷酸三正丁酯，观测到其大气浓度呈上升趋势，估计倍增时间分别为2.9年和4.2年。在一个研究站和当地机场附近的两个采样点，OPEs含量略有升高，这表明可能受到当地污染源的影响。冰川的再挥发也可能影响北极大气中OPEs的含量。
