Department of Environmental Health Sciences, School of Public Health, Seoul National University, Seoul, South Korea.
Institute of Health and Environment, Seoul National University, Seoul, South Korea.
J Hazard Mater. 2020 Jan 5;381:120909. doi: 10.1016/j.jhazmat.2019.120909. Epub 2019 Jul 18.
Seasonal and spatial variations in per- and polyfluoroalkyl substances (PFAS) concentrations in different environmental media in the Asan Lake area of South Korea were investigated by measuring liquid chromatography-tandem mass spectrometry (LC-MS/MS). The mean concentrations of Σ PFAS in the different media were in the ranges of 20.7-98.2 pg/m in air, 17.7-467 ng/L in water, 0.04-15.0 ng/g dry weight (dw) in sediments, and not detected (n.d.)-12.9 ng/g dw in soils, and the mean concentrations of Σ PFAS in fish ranged from n.d. to 197 ng/g wet weight. The most frequently detected PFAS were perfluorooctanoic acid (PFOA) in air and soils, perfluoropentanoic acid (PFPeA) in water, and perfluorooctane sulfonate (PFOS) in sediment and fish. Long-chain PFAS species dominated over short-chain PFAS in most media samples except for the water phase. Sediment-water partition coefficients (log K) and bioaccumulation factors (log BAF) of PFAS were calculated using measured concentrations in water, sediments, and fish. Log K of PFAS tended to increase with increasing CF units of PFAS, and perfluorodecanoic acid (PFDA) and PFOS showed the highest log BAF value (> 3.0) in all fish species. These results indicate that longer-chain PFAS, especially PFOS, can be effectively accumulated in biota such as fish.
本研究通过液相色谱-串联质谱法（LC-MS/MS）测定了韩国牙山市不同环境介质中全氟和多氟烷基物质（PFAS）的浓度，调查了其季节和空间变化。不同介质中ΣPFAS 的平均浓度范围为：空气中 20.7-98.2 pg/m，水中 17.7-467 ng/L，沉积物中 0.04-15.0 ng/g 干重（dw），土壤中未检出（n.d.）-12.9 ng/g dw，鱼类中 ΣPFAS 的平均浓度范围为 n.d.-197 ng/g 湿重。空气中和土壤中最常检测到的 PFAS 为全氟辛酸（PFOA），水中为全氟戊酸（PFPeA），沉积物和鱼类中为全氟辛烷磺酸（PFOS）。除水相外，大多数介质样品中长链 PFAS 种类均超过短链 PFAS。使用水中、沉积物中和鱼类中的实测浓度计算了 PFAS 的分配系数（log K）和生物积累因子（log BAF）。PFAS 的 log K 随 PFAS 的 CF 单位增加而增加，所有鱼类中全氟癸酸（PFDA）和 PFOS 的 log BAF 值最高（>3.0）。这些结果表明，长链 PFAS，特别是 PFOS，可以有效地在鱼类等生物群中积累。
