Adsorption-desorption of Atrazine with 9 Agricultural Soils in China.

IF 2.7 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Bulletin of Environmental Contamination and Toxicology Pub Date : 2024-01-31 DOI:10.1007/s00128-023-03827-0

Juying Li, Li Cao, Jing Xu, Yezhi Dou, Jia Yu, Jian He, Linghao Xu, Cunliang Zhang, Jian Yu, Deyang Kong, Wenzhu Wu

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Abstract

In this work, the characteristics and mechanisms for atrazine adsorption-desorption with 9 types of soils were investigated with batch equilibrium studies, elemental analyses, infrared spectroscopy, and UV‒visible spectroscopy. The atrazine sorption data for the 9 soils showed better fits with the Freundlich model than the Langmuir model, except with Red earth in Jiangxi (REJ) The results showed that the adsorption capacity was positively correlated with the organic matter (OM) content and negatively correlated with cation-exchange capacity (CEC) and pH. UV‒visible spectroscopy showed that dissolved organic matter (DOM) in the soil enhanced atrazine adsorption, but the adsorption on different DOM fractions was quite different. In addition, the infrared spectra revealed differences in the functional groups of soils and these functional groups may drive the adsorption process via hydrogen bonding and coordination with the -NH₂ groups in atrazine.

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中国 9 种农业土壤对阿特拉津的吸附-解吸。

本研究采用批次平衡研究、元素分析、红外光谱和紫外可见光谱等方法研究了阿特拉津在9种土壤中的吸附-解吸特性和机理。结果表明，除江西红土（REJ）外，9 种土壤的阿特拉津吸附数据与 Freundlich 模型的拟合优于 Langmuir 模型。紫外可见光谱显示，土壤中的溶解有机质（DOM）增强了对阿特拉津的吸附，但不同DOM组分对阿特拉津的吸附量有很大差异。此外，红外光谱显示了土壤中官能团的差异，这些官能团可能通过氢键和与阿特拉津中的 -NH2 基团配位来驱动吸附过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Environmental Contamination and Toxicology 环境科学-毒理学

CiteScore

5.60

自引率

3.70%

发文量

230

审稿时长

1.7 months

期刊介绍： The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.