气候变化领域集成服务门户(CCPortal): Loss and Increase of the Electron Exchange Capacity of NaturalOrganic Matter during Its Reduction and Reoxidation: The Role ofQuinone and Nonquinone Moieties

CCPortal

DOI	10.1021/acs.est.1c08927
	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
通讯作者	Yin, YG (通讯作者)
发表日期	2022
ISSN	0013-936X
EISSN	1520-5851
起始页码	6744
结束页码	6753
卷号	56 期号:10
英文摘要	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
关键词	DISSOLVED ORGANIC-MATTER HUMIC SUBSTANCES OPTICAL-PROPERTIES FUNCTIONAL-GROUPS OXIDATION SOIL QUINONE LIGNIN SULFUR THIOLS
英文关键词	natural organic matter; electron exchange capacity; quinone; aromatic aldehyde; ketone; sulfur-; nitrogen-containing moiety; redox transformation
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000804806300071
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260722
推荐引用方式 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]. 中国科学院青藏高原研究所,2022,56(10).
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).
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).