Interfacial Molecular Fractionation Induces Preferential Protection of Biorefractory Organic Matter by Ferrihydrite
文献类型：期刊论文
| 作者 | Li, Yanna; Lv, Jitao; Cao, Dong ; Zhang, Shuzhen
|
| 刊名 | ACS EARTH AND SPACE CHEMISTRY
 |
| 出版日期 | 2021-05-20 |
| 卷号 | 5期号:5页码:1094-1101 |
| 关键词 | DOM biodegradation molecular fractionation selective adsorption mineral |
| ISSN号 | 2472-3452 |
| 英文摘要 | Minerals are known to protect dissolved organic matter (DOM) against biodegradation and thus play an important role in the long-term persistence of organic carbon (OC) in soils. However, as a super-mixture of organic compounds, it is expected that not all components in DOM can be protected by minerals due to selective adsorption. The present study examined how molecular fractionation of plant-derived DOM at ferrihydrite-water interface Leach e affects their biodegradation. The results of Fourier transform ion cyclotron resonance mass spectrometry analysis showed that highly unsaturated and oxygenated moieties in DOM displayed high affinities, while highly saturated compounds rich in aliphatic groups exhibited low affinities to ferrihydrite, resulting in the molecular fractionation of DOM at the water-mineral interface. Comparison of the biodegradation of DOM extracted from different phases after adsorption on ferrihydrite indicated that compounds with lower affinities to ferrihydrite had higher degradation MAOM degrees, while compounds with higher affinities to ferrihydrite had lower degradation degrees. Considering the protective role of minerals on adsorbed OC, molecular fractionation at the ferrihydrite-water interface leads to inherently refractory OC being more stable, while labile OC is more easily degraded in soils. |
| WOS研究方向 | Chemistry, Multidisciplinary ; Geochemistry & Geophysics |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45763]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yanna,Lv, Jitao,Cao, Dong,et al. Interfacial Molecular Fractionation Induces Preferential Protection of Biorefractory Organic Matter by Ferrihydrite[J]. ACS EARTH AND SPACE CHEMISTRY,2021,5(5):1094-1101. |
| APA | Li, Yanna,Lv, Jitao,Cao, Dong,&Zhang, Shuzhen.(2021).Interfacial Molecular Fractionation Induces Preferential Protection of Biorefractory Organic Matter by Ferrihydrite.ACS EARTH AND SPACE CHEMISTRY,5(5),1094-1101. |
| MLA | Li, Yanna,et al."Interfacial Molecular Fractionation Induces Preferential Protection of Biorefractory Organic Matter by Ferrihydrite".ACS EARTH AND SPACE CHEMISTRY 5.5(2021):1094-1101. |
入库方式： OAI收割
来源：生态环境研究中心
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