Hydroxyl radical formation upon dark oxidation of reduced iron minerals: Effects of iron species and environmental factors
文献类型：期刊论文
| 作者 | Zhu, Ailing1; Guo, Yingying1,2; Liu, Guangliang3; Song, Maoyong1,2 ; Liang, Yong; Cai, Yong1,2,3; Yin, Yongguang1,2
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| 刊名 | CHINESE CHEMICAL LETTERS
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 30期号:12页码:2241-2244 |
| 关键词 | Reduced iron minerals Hydroxyl radical Dark oxidation Mackinawite Dissolved organic matter |
| ISSN号 | 1001-8417 |
| 英文摘要 | Dark formation of hydroxyl radical upon oxidation of reduced iron minerals plays an important role in the degradation and transformation of organic and inorganic pollutants. Herein, we compared the hydroxyl radical formation from various reduced iron minerals at different redox conditions. (OH)-O-center dot production was generally observed from the oxidation of reduced iron minerals, following the order: mackinawite (FeS) > reduced nontronite (iron-bearing smectite clay) > pyrite (FeS2) > siderite (FeCO3). Structural Fe2+ and dissolved O-2 play critical roles in OH production from reduced iron minerals. (OH)-O-center dot production increases with decreasing pH, and Cl- has little effect on this process. More importantly, dissolved organic matter significantly enhances (OH)-O-center dot production, especially under O-2 purging, highlighting the importance of this process in ambient environments. This sunlight-independent pathway in which (OH)-O-center dot forms during oxidation of reduced iron minerals is helpful for understanding the degradation and transformation of various inorganic and organic pollutants in the redox-fluctuation environments. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42549]  |
| 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.Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Lab Environm Nanotechnol & Hlth Effect, Beijing 100085, Peoples R China 4.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA |
| 推荐引用方式 GB/T 7714 | Zhu, Ailing,Guo, Yingying,Liu, Guangliang,et al. Hydroxyl radical formation upon dark oxidation of reduced iron minerals: Effects of iron species and environmental factors[J]. CHINESE CHEMICAL LETTERS,2019,30(12):2241-2244. |
| APA | Zhu, Ailing.,Guo, Yingying.,Liu, Guangliang.,Song, Maoyong.,Liang, Yong.,...&Yin, Yongguang.(2019).Hydroxyl radical formation upon dark oxidation of reduced iron minerals: Effects of iron species and environmental factors.CHINESE CHEMICAL LETTERS,30(12),2241-2244. |
| MLA | Zhu, Ailing,et al."Hydroxyl radical formation upon dark oxidation of reduced iron minerals: Effects of iron species and environmental factors".CHINESE CHEMICAL LETTERS 30.12(2019):2241-2244. |
入库方式： OAI收割
来源：生态环境研究中心
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