Education & Research Center for Infrastructure of Smart Ocean City (i-SOC Center), Pusan National University, Busan, 46241, Republic of Korea.
Department of Civil and Environmental Engineering, Pusan National University, Busan, 46241, Republic of Korea; Seoul Institute, Seoul, 06756, Republic of Korea.
Chemosphere. 2021 Aug;276:130167. doi: 10.1016/j.chemosphere.2021.130167. Epub 2021 Mar 3.
In this study, a nationwide monitoring of perfluoroalkyl substances (PFAS) in soils was conducted for various land-use types around South Korea, such as industrial complexes, landfills, farmlands, mountains, and woodlands. The ∑PFAS concentrations in soil samples ranged from 0.175 to 11.7 ng/g dry weight (dw) (median 2.39 ng/g dw). The soil samples from industrial complexes (0.346-11.7 ng/g dw; median 3.25 ng/g dw) and landfills (0.504-10.4 ng/g dw; median 2.13 ng/g dw) had higher median ∑PFAS concentrations than other regions (0.175-3.01 ng/g dw; median 1.15 ng/g dw). In the soil samples from industrial areas, the ∑PFAS concentrations ranged from 3.11 to 11.7 ng/g dw (median 6.32 ng/g dw) from the textile industries, 3.26-8.74 ng/g dw (median 6.20 ng/g dw) from the metal industries, 1.53-5.71 ng/g dw (median 3.38 ng/g) from the chemical industries, and 0.346-3.48 ng/g dw (median 2.39 ng/g dw) from the electronics industries. Perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), and long chain perfluorinated carboxylic acids (PFCAs) between C9 and C12 were generally dominant in these soils. In particular, PFOS, perfluorohexane sulfonate (PFHxS), and PFCAs with ≤ C6 were more frequently found in soils from industrial complexes than from other land-use types. On the other hand, PFCAs between C7 and C12 had relatively high detection frequencies regardless of the soil type.
本研究对韩国各地的各种土地利用类型（如工业区、垃圾填埋场、农田、山区和林地）进行了全氟烷基物质（PFAS）的土壤监测。土壤样本中∑PFAS 的浓度范围为 0.175 至 11.7ng/g 干重（中位数为 2.39ng/g dw）。工业区（0.346-11.7ng/g dw；中位数为 3.25ng/g dw）和垃圾填埋场（0.504-10.4ng/g dw；中位数为 2.13ng/g dw）的土壤样本中∑PFAS 浓度中位数高于其他地区（0.175-3.01ng/g dw；中位数为 1.15ng/g dw）。在工业区土壤样本中，纺织工业的∑PFAS 浓度范围为 3.11 至 11.7ng/g dw（中位数为 6.32ng/g dw），金属工业为 3.26-8.74ng/g dw（中位数为 6.20ng/g dw），化工工业为 1.53-5.71ng/g dw（中位数为 3.38ng/g dw），电子工业为 0.346-3.48ng/g dw（中位数为 2.39ng/g dw）。全氟辛烷磺酸（PFOS）、全氟辛酸（PFOA）和 C9 至 C12 之间的长链全氟羧酸（PFCAs）通常在这些土壤中占主导地位。特别是，PFOS、全氟己烷磺酸（PFHxS）和 ≤C6 的 PFCAs 在工业区土壤中的检出频率高于其他土地利用类型。另一方面，无论土壤类型如何，C7 至 C12 之间的 PFCAs 都具有相对较高的检测频率。
