两种硫胺在土壤中的吸附和运输上的冷解效应:批量和列研究
Siyang Sun1, Shuyi Yu1, Ruihan Du1
1Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130012, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130012, PR China.
Journal of contaminant hydrology
|February 9, 2025
概括
冷解周期改变了土壤的特性,影响了硫胺抗生素的吸附和运输. 最初,吸附率下降,然后由于土壤特征的变化,随着更多周期的增加,吸附率增加.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 环境化学环境化学
背景情况:
- 结解周期 (FTC) 显著影响土壤的物理化学特性,影响污染物的行为.
- 在FTCs下的土壤中对抗生素的环境命运的研究是有限的.
研究的目的:
- 调查FTCs对土壤中硫甲醇 (SMX) 和硫胺 (SPY) 的吸附和运输的影响.
- 了解如何改变土壤特性影响抗生素命运和运输.
主要方法:
- 土壤样本受到不同数量的FTC的影响.
- 测量了SMX和SPY的吸附性.
- 分析了土壤特性 (pH,粘土含量,特定表面积,孔隙结构,溶解有机物).
- 研究了土壤柱中抗生素的垂直运输,有和没有重金属.
主要成果:
- FTC最初降低了SMX和SPY吸附率,但随着更多的周期增加了它.
- 土壤pH值的增加最初阻碍了吸附,而后来的粘土含量增加,特定表面积,小孔和溶解的有机物增强了吸附.
- FTCs改变了土壤毛孔结构,创造了有利的流通路径,促进了抗生素运输.
- 重金属 (Cd2+,Cu2+) 进一步增强了抗生素的运输.
结论:
- FTCs显著改变土壤特性,影响硫胺抗生素吸附和运输动态.
- 由FTC驱动的土壤物理化学性质,毛孔结构和流动路径的变化对于预测抗生素环境命运至关重要.
- 了解这些过程对于评估气候条件变化中的污染物风险至关重要.
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