The vital function of humic acid with different molecular weight in controlling Cd and Pb bioavailability and toxicity to earthworm (Eisenia fetida) in soil
文献类型： 外文期刊
作者： Bai, Hongcheng 1 ; Luo, Mei 1 ; Wei, Shiqiang 1 ; Jiang, Zhenmao 1 ; He, Mingjing 1 ;
作者机构： 1.Southwest Univ, Dept Environm Sci & Engn, Chongqing, Peoples R China
2.Chongqing Key Lab Agr Resources & Environm, Chongqing, Peoples R China
3.Southwest Univ, State Cultivat Base Ecoagr Southwest Mt Land, Chongqing 400715, Peoples R China
4.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Dept Environm Sci, Chongqing, Peoples R China
关键词： Humic acid; Molecular weight; Earthworm; Toxicity; Bioavailability
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.071； 五年影响因子：8.35 ）
ISSN： 0269-7491
年卷期： 2020 年 261 卷
页码：
收录情况： SCI
摘要：
Humic acid (HA) plays vital roles in regulating the environmental behaviors of metals and thus their toxicity to biota. However, the inner relation between metal bioavailability to soil organisms and the presence of HA with different molecular weight (Mw) is not well documented. In this study, we separated HAs into four fractions with Mw range of 5-30k Da, and discussed their ability to alleviating the toxicity of Cd and Pb to earthworm. The bioaccumulation capacities (C-max) increased in order of: UF1
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