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Influence of Nonionic Surfactants on the Adsorption and Elution of Atrazine in Agriculturally Modified Soils

Author

Listed:
  • Na Zhao

    (Bayannur Academy of Agricultural & Animal Husbandry Sciences, Linhe 015400, China)

  • Chengjian Yang

    (Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
    School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)

Abstract

The Hetao Irrigation District, situated in the Northwest of China, serves as a significant commercial grain base. Widespread use of atrazine, an herbicide in the region, has resulted in significant environmental issues, impacting the ecosystem equilibrium and sustainable agricultural development. The co-adsorption of the globally employed atrazine herbicide along with two nonionic surfactants, Tween-80 and Brij30, onto soils treated with HCl and H 2 O 2 was investigated. The study revealed that the adsorption isothermal curves of surfactants on soil adhered to a two-stage adsorption model. Various types of adsorption isothermal curves, such as S-type or L-type, influenced the adsorption capacity of atrazine on the soil. Observations indicated that S-type or L-type isothermal curves of surfactants interconverted with alterations in soil polarity. Moreover, it has been uncovered that the adsorption properties of Tween 80 in the soil are intricately connected to its ability to elute atrazine within the same soil. This discovery provides theoretical support for a prudent reduction in herbicide usage in the Hetao Irrigation District in the upcoming years.

Suggested Citation

  • Na Zhao & Chengjian Yang, 2024. "Influence of Nonionic Surfactants on the Adsorption and Elution of Atrazine in Agriculturally Modified Soils," Agriculture, MDPI, vol. 14(5), pages 1-14, May.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:5:p:733-:d:1390594
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