Comprehensive characterization of marine dissolved organic matter by Fourier transform ion cyclotron resonance mass spectrometry with electrospray and atmospheric pressure photoionization

被引：101

作者：

D'Andrilli, Juliana ^{[1
]}

Dittmar, Thorsten ^{[2
,3
]}

Koch, Boris P. ^{[4
]}

Purcell, Jeremiah M. ^{[5
]}

Marshall, Alan G. ^{[1
,5
]}

Cooper, William T. ^{[1
]}

机构：

[1] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

[2] Carl von Ossietzky Univ Oldenburg, D-26111 Oldenburg, Germany

[3] Max Planck Res Grp Marine Geochem, D-26111 Oldenburg, Germany

[4] Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany

[5] Natl High Magnet Field Lab, Ion Cyclotron Resonance Program, Tallahassee, FL 32310 USA

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 2010年 / 24卷 / 05期

基金：

美国海洋和大气管理局;

关键词：

LIQUID-CHROMATOGRAPHY; MOLECULAR FORMULAS; FULVIC-ACIDS; WEDDELL SEA; IONIZATION; WATER; DOM; CIRCULATION; EXTRACTION; COMPONENT;

D O I：

10.1002/rcm.4421

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

We compare the ultrahigh resolution 9.4T Fourier transform ion cyclotron resonance (FT-ICR) mass spectra of marine dissolved organic matter (DOM) isolated from two sites in the Weddell Sea (Antarctica) obtained by complementary electrospray ionization (ESI) and atmospheric pressure photoionization (APPI). Ions produced by APPI extend to higher carbon unsaturation than those produced by ESI, indicated by higher double-bond equivalents (rings plus double bonds) minus oxygen (DBE-O) values, whereas ESI-generated ions are more oxygenated. Moreover, many sulfur-containing compounds were efficiently ionized by ESI but not detected by APPI. Because the mass spectra obtained by ESI and APPI are significantly different, both are necessary to obtain a more complete description of the molecular composition of marine DOM. Copyright (C) 2010 John Wiley & Sons, Ltd.

引用

页码：643 / 650

页数：8

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