| Loss and Increase of the Electron Exchange Capacity of NaturalOrganic Matter during Its Reduction and Reoxidation: The Role ofQuinone and Nonquinone Moieties | |
Yang, Peijie ; Jiang, Tao; Cong, Zhiyuan; Liu, Guangliang; Guo, Yingying; Liu, Yanwei; Shi, Jianbo; Hu, Ligang; Yin, Yongguang; Cai, Yong; Jiang, Guibin
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| 2022-05-17 | |
| Source Publication | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| ISSN | 0013-936X |
| Volume | 56Issue:10Pages:6744-6753 |
| Abstract | Redox-active quinone and nonquinone moieties represent the electronexchange capacity (EEC) of natural organic matter (NOM), playing an importantrole in the electron transfer link of microbes and transformation of contaminants/metal minerals. However, the corresponding transformation of quinone/phenol andtheir respective influence on the EECs during reduction and reoxidation remainpoorly characterized. Besides, it is still controversial whether nonquinones donate oraccept electrons. Herein, we demonstrated that reoxidation of NOM after reductioncan form new phenolic/quinone moieties, thus increasing the EEC. The assessmentfor the EEC, including the electron-donating capacity (EDC) and electron-acceptingcapacity (EAC), of nonquinones reflects the contribution of sulfur-containingmoieties with considerable EDCs and EACs. In contrast, nitrogen-containing moieties donate negligible electrons even atEh= +0.73V. The contributions of both thiol and amine moieties to the EEC are greatly affected by adjacent functional groups. Meanwhile,aldehydes/ketones did not display an EAC during the electron transfer process of NOM. Furthermore, substantially increased EDCatEhfrom +0.61 to +0.73 V could not be fully explained using thiol and phenolic moieties, suggesting the contribution of unknownmoieties with high oxidation potential. The overallfindings suggest that the roles of new quinones/phenol (derived from theaddition of oxygen to condensed aromatic/lignin-like components) during redox dynamic cycling and thiol species should beconsidered in assessing the electron transfer processes of NOM |
| Department | 环境纳米技术与健康效应重点实验室;环境化学与生态毒理学国家重点实验室 ; 环境纳米技术与健康效应重点实验室;环境化学与生态毒理学国家重点实验室 |
| Keyword | DISSOLVED ORGANIC-MATTER HUMIC SUBSTANCES OPTICAL-PROPERTIES FUNCTIONAL-GROUPS OXIDATION SOIL QUINONE LIGNIN SULFUR THIOLS |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47661 |
| Collection | 环境纳米技术与健康效应重点实验室 |
| Corresponding Author | Yin, Yongguang |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Lab Environm Nanotechnol & Hlth Effect, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Southwest Univ, Coll Resources & Environm, Interdisciplinary Res Ctr Agr Green Dev Yangtze R, Chongqing 400716, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, |
| Recommended Citation GB/T 7714 | Yang, Peijie,Jiang, Tao,Cong, Zhiyuan,et al. Loss and Increase of the Electron Exchange Capacity of NaturalOrganic Matter during Its Reduction and Reoxidation: The Role ofQuinone and Nonquinone Moieties[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022,56(10):6744-6753. |
| APA | Yang, Peijie.,Jiang, Tao.,Cong, Zhiyuan.,Liu, Guangliang.,Guo, Yingying.,...&Jiang, Guibin.(2022).Loss and Increase of the Electron Exchange Capacity of NaturalOrganic Matter during Its Reduction and Reoxidation: The Role ofQuinone and Nonquinone Moieties.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(10),6744-6753. |
| MLA | Yang, Peijie,et al."Loss and Increase of the Electron Exchange Capacity of NaturalOrganic Matter during Its Reduction and Reoxidation: The Role ofQuinone and Nonquinone Moieties".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.10(2022):6744-6753. |
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