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Evaluating the Distribution of Perfluoroalkyl Substances in Rice Paddy Lysimeter with an Andosol

文献类型： 外文期刊

作者： Eun, Heesoo 1 ; Yamazaki, Eriko 2 ; Pan, Yu 3 ; Taniyasu, Sachi 2 ; Noborio, Kosuke 4 ; Yamashita, Nobuyoshi 2 ;

作者机构： 1.Natl Agr & Food Res Org NARO, Res Ctr Adv Anal, 3 1 3 Kannondai, Tsukuba, Ibaraki 3058604, Japan

2.Natl Inst Adv Ind Sci & Technol, 16 1 Onogawa, Tsukuba, Ibaraki 3058569, Japan

3.Yunnan Acad Agr Sci, Inst Med Plants, Kunming 650200, Yunnan, Peoples R China

4.Meiji Univ, Dept Agr, 1 1 1 Higashi Mita, Kawasaki, Kanagawa 2148571, Japan

关键词： andosols; shorter chain PFAS; longer chain PFAS; lysimeter

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：4.614； 五年影响因子：4.798 ）

ISSN：

年卷期： 2022 年 19 卷 16 期

页码：

收录情况： SCI

摘要： The properties of potential emerging persistent contaminants, perfluoroalkyl substances (PFAS), in an andosol rice paddy lysimeter were analyzed to determine their mobility and leaching behavior regarding carbon chain length and functional groups. For this purpose, simulated contaminated water (sigma PFAS = 1,185,719 ng/L) was used in the lysimeter. The results showed that PFAS distribution in the paddy soil lysimeter was influenced by the migration of these substances into irrigation water and their adsorption into the soil. PFHxS (C6) and PFOS (C8), which are the main components of the simulated contaminated water, were mostly captured in the soil layers of the low-humic andosol layer (0-35 cm). PFAS distribution may depend on soil properties, such as total carbon (TC) content. Compared with perfluoroalkane sulfonic acids (PFSAs), the distribution of perfluoroalkyl carboxylic acids (PFCAs) in soil showed significant variation. The remaining PFCAs were distributed across all layers of the lysimeter, except for the longer-chain PFCAs. Moreover, the PFSA distribution was directly correlated with the carbon chain number, whereby longer- and shorter-chain PFSAs accumulated in the top and bottom soil layers, respectively. This study provides detailed information on the distribution, leaching, uptake, and accumulation of individual PFAS in andosol paddy fields in Japan.

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