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Advanced molecular-fingerprinting analysis of dissolved organic sulfur by electrospray ionization -Fourier transform ion cyclotron resonance mass spectrometry using optimal spray solvent
Cao, Dong; Rao, Ziyu; Geng, Fanglan; Niu, Hongyun; Shi, Yali; Cai, Yaqi; Kang, Yuehui
2020-11
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume97Pages:67-74
AbstractMolecular level characterization of dissolved organic sulfur (DOS) by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR MS) is necessary for further understanding of the role of DOS in the environment. Here, ESI spray solvent, a key parameter for ion production during ESI process, was investigated for its effect on the molecular characterization of DOS by ESI-FTICR MS. 100% Me0H as spray solvent was found for the first time to remarkably enhance the ionization efficiency of the majority of CHOS-molecules in NOM, which facilitated a total of 1473 CHOS-molecular formulas with one sulfur atom to be detected. The number of CHOS-molecular formulas obtained using 100%MeOH as spray solvent increased notably over 740 in comparison with those using 50% Me0H aqueous solution (731) or 50% ACN aqueous solution (653). Moreover, due to the enhancement of ionization efficiency of DOS during ESI processes, the tandem mass spectra of the NOM CHOS-molecules could be easily obtained using 100% Me0H as spray solvent, which were hardly obtained using 50% Me0H aqueous solution as spray solvent. The results of the tandem mass spectra suggested the first discovery of organosulfates or sulfonic acids in Suwannee River NOM sample. A simple method based on 100% Me0H as ESI spray solvent for advanced molecular characterization of DOS by ESI-FTICR MS was proposed and applied, and the results revealed more molecular information of DOS in sea DOM samples. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Department环境化学与生态毒理学国家重点实验室
KeywordNatural organic matter Fourier transform ion cyclotron resonance mass spectrometry Spray solvent Dissolved organic sulfur
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/44591
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Cao, Dong,Rao, Ziyu,Geng, Fanglan,et al. Advanced molecular-fingerprinting analysis of dissolved organic sulfur by electrospray ionization -Fourier transform ion cyclotron resonance mass spectrometry using optimal spray solvent[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2020,97:67-74.
APA Cao, Dong.,Rao, Ziyu.,Geng, Fanglan.,Niu, Hongyun.,Shi, Yali.,...&Kang, Yuehui.(2020).Advanced molecular-fingerprinting analysis of dissolved organic sulfur by electrospray ionization -Fourier transform ion cyclotron resonance mass spectrometry using optimal spray solvent.JOURNAL OF ENVIRONMENTAL SCIENCES,97,67-74.
MLA Cao, Dong,et al."Advanced molecular-fingerprinting analysis of dissolved organic sulfur by electrospray ionization -Fourier transform ion cyclotron resonance mass spectrometry using optimal spray solvent".JOURNAL OF ENVIRONMENTAL SCIENCES 97(2020):67-74.
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