Reducing Reagents Induce Molecular Artifacts in the Extraction of Soil Organic Matter

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Reducing Reagents Induce Molecular Artifacts in the Extraction of Soil Organic Matter
	Lv, Jitao; Huang, Zaoquan; Christie, Peter; Zhang, Shuzhen
刊名	ACS EARTH AND SPACE CHEMISTRY
	2020-11-19
卷号	4 期号:11 页码:1913-1919
关键词	dithionite FT-ICR MS hydroxylamine iron-oxyhydroxide-assoc ated organic matter soil organic matter
ISSN号	2472-3452
英文摘要	Organic matter (OM) often co-exists with iron oxyhydroxides in soils to form iron-oxyhydroxide-associated OM. Reducing reagents, such as dithionite and hydroxylamine, have been widely used to selectively extract iron-oxyhydroxide-associated OM from soils for further characterization. However, our results using Fourier transform ion cyclotron resonance mass spectrometry analysis demonstrate that substantial amounts of N- or S-containing molecules, accounting for 20-30% of the total molecules, were present in the OM extracted from soils by hydroxylamine and dithionite. These N- or S-containing molecules contained mainly molecular artifacts formed through reactions between OM and the extractants. Aldehyde-, ketone-, and carbonyl-containing molecules in dissolved organic matter would be expected to react with hydroxylamine and dithionite to form the N- or S-containing molecular artifacts. Both dithionite and hydroxylamine are therefore unsuitable for the extraction of iron oxyhydroxide-associated OM, with the aim of molecular characterization. Moreover, special note should be made of the reactions that occur between OM and chemical extractants to avoid the production of misleading information on OM as a result of the formation of artifacts.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44792]
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
推荐引用方式 GB/T 7714	Lv, Jitao,Huang, Zaoquan,Christie, Peter,et al. Reducing Reagents Induce Molecular Artifacts in the Extraction of Soil Organic Matter[J]. ACS EARTH AND SPACE CHEMISTRY,2020,4(11):1913-1919.
APA	Lv, Jitao,Huang, Zaoquan,Christie, Peter,&Zhang, Shuzhen.(2020).Reducing Reagents Induce Molecular Artifacts in the Extraction of Soil Organic Matter.ACS EARTH AND SPACE CHEMISTRY,4(11),1913-1919.
MLA	Lv, Jitao,et al."Reducing Reagents Induce Molecular Artifacts in the Extraction of Soil Organic Matter".ACS EARTH AND SPACE CHEMISTRY 4.11(2020):1913-1919.