The vital function of humic acid with different molecular weight in controlling Cd and Pb bioavailability and toxicity to earthworm (Eisenia fetida) in soil
The vital function of humic acid with different molecular weight in controlling Cd and Pb bioavailability and toxicity to earthworm (Eisenia fetida) in soil
复制标题
不同分子量腐植酸控制土壤中Cd、Pb生物有效性及对蚯蚓毒性的重要作用
DOI：
10.1016/j.envpol.2020.114222
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发表时间：
2020-06-01
影响因子：
8.9
通讯作者：
He, Mingjing
中科院分区：
文献类型：
--
作者：
Bai, Hongcheng;Luo, Mei;He, Mingjing
腐植酸（HA）在调节金属的环境行为及其对生物群的毒性中起着重要作用。然而，金属对土壤生物的生物有效性与不同分子量（Mw）的HA的存在之间的内在关系并没有很好的文献记录。在本研究中，我们将HAs分成4个分子量范围为5- 30kda的组分，并讨论了它们减轻Cd和Pb对蚯蚓的毒性的能力。生物积累能力（C-max）的增加顺序为：UF1
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