Interfacial Molecular Fractionation on Ferrihydrite Reduces the Photochemical Reactivity of Dissolved Organic Matter
文献类型：期刊论文
| 作者 | Wang, Zhe; Lv, Jitao; Zhang, Suhuan; Christie, Peter; Zhang, Shuzhen |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-02-02 |
| 卷号 | 55期号:3页码:1769-1778 |
| ISSN号 | 0013-936X |
| 英文摘要 | The selective sorption of dissolved organic matter (DOM) on minerals is a widespread geochemical process in the natural environment. Recent studies have explored the influence of this process on the molecular fractionation of DOM at water-mineral interfaces. However, it remains unclear how molecular fractionation affects the photochemistry of DOM. Here, we demonstrate that the adsorptive fractionation of DOM on ferrihydrite greatly reduces its photoproduction of reactive oxygen species (ROS) including O-1(2,) O-2(center dot-), and center dot OH normalized to organic carbon (ROSOC). The ROSOC for O-1(2), O-2(center dot-), and center dot OH were positively correlated with the abundances of polyphenols and oxygenated polycyclic aromatics, which were also observed using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) analysis to be preferentially sequestered by ferrihydrite. The molecules that preferentially remained in the solution after adsorption displayed low levels of ROSOC. The molecular fractionation of DOM induced by adsorption on ferrihydrite therefore influenced the molecular components and also significantly reduced the photoreactive fractions of DOM in waters. These results are very important in promoting our understanding of the effects of molecular fractionation on the biogeochemical features, behaviors, and implications of DOM in the environment. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45764]  |
| 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 | Wang, Zhe,Lv, Jitao,Zhang, Suhuan,et al. Interfacial Molecular Fractionation on Ferrihydrite Reduces the Photochemical Reactivity of Dissolved Organic Matter[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(3):1769-1778. |
| APA | Wang, Zhe,Lv, Jitao,Zhang, Suhuan,Christie, Peter,&Zhang, Shuzhen.(2021).Interfacial Molecular Fractionation on Ferrihydrite Reduces the Photochemical Reactivity of Dissolved Organic Matter.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(3),1769-1778. |
| MLA | Wang, Zhe,et al."Interfacial Molecular Fractionation on Ferrihydrite Reduces the Photochemical Reactivity of Dissolved Organic Matter".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.3(2021):1769-1778. |
入库方式： OAI收割
来源：生态环境研究中心
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