文献类型： 外文期刊
作者： Wei, Lan 1 ; Huang, Lianxi 1 ; Li, Xiang 1 ; Huang, Yufen 1 ; Chen, Weisheng 1 ; Ma, Rui 1 ; Liu, Zhongzhen 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Plant Nutr & Fertilizer South Reg, Guangdong Key Lab Nutrient Cycling & Farmland Cons, Guangzhou 510640, Peoples R China
关键词： herbicide; adsorption capacity; parent materials; properties; biochar
期刊名称：AGRONOMY-BASEL （ 影响因子：3.3； 五年影响因子：3.7 ）
ISSN：
年卷期： 2024 年 14 卷 6 期
页码：
收录情况： SCI
摘要： Sorption is the most important process influencing the amount of herbicide retained in soils. The special properties of biochar could influence the soil retention of pollutants through adsorption. However, the detailed sorption mechanisms as influenced before and after applying biochar to soils with different properties are unclear. This study examined the sorption characteristics of metolachlor using soil samples collected from South China. Sorption experiments were conducted using a batch equilibration method. After comparing the metolachlor sorption constants observed for all soil samples, our results showed that the application of biochar significantly increased the capacity of metolachlor adsorption. Without biochar, sorption capacity (Kf) was positively related to soil organic matter and to a soil particle size of 0.002-0.02 mm in soils developed from granite, of 0.002-0.02 mm in soils developed from delta shockwaves, and of 0.002-0.02 mm, together with complex iron oxide and total iron content, in soils developed from arenaceous shale. Moreover, sorption capacity (Kf) with biochar was positively related to peroxidase in soils developed from granite and to dissociative iron oxide and total iron content in soils developed from arenaceous shale. Our results show that biochar greatly affects metolachlor sorption behavior, probably because of qualitative differences in the structural characteristics of soils with different developmental parent materials and properties.
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