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

Author

Listed:
  • Heesoo Eun

    (Research Center for Advanced Analysis, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba 305-8604, Ibaraki, Japan
    These authors contributed equally to this work.)

  • Eriko Yamazaki

    (National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba 305-8569, Ibaraki, Japan
    These authors contributed equally to this work.)

  • Yu Pan

    (Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming 650200, China)

  • Sachi Taniyasu

    (National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba 305-8569, Ibaraki, Japan)

  • Kosuke Noborio

    (Department of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Kawasaki 214-8571, Kanagawa, Japan)

  • Nobuyoshi Yamashita

    (National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba 305-8569, Ibaraki, Japan)

Abstract

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 (ΣPFAS = 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.

Suggested Citation

  • Heesoo Eun & Eriko Yamazaki & Yu Pan & Sachi Taniyasu & Kosuke Noborio & Nobuyoshi Yamashita, 2022. "Evaluating the Distribution of Perfluoroalkyl Substances in Rice Paddy Lysimeter with an Andosol," IJERPH, MDPI, vol. 19(16), pages 1-10, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:16:p:10379-:d:893347
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