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

Authors

  • Juliana D'Andrilli,

    1. Department of Chemistry & Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
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  • Thorsten Dittmar,

    1. Carl Von Ossietzky University, Oldenburg and Max Planck Research Group Marine Geochemistry, D-26111 Oldenburg, Germany
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  • Boris P. Koch,

    1. Alfred Wegener Institute for Polar and Marine Research, D-27570 Bremerhaven, Germany
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  • Jeremiah M. Purcell,

    1. Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 32310-4005, USA
    Current affiliation:
    1. Shell Global Solutions (US) Inc., Westhollow Technology Center, M-1260, 3333 Highway 6, South Houston, TX 77210, USA.
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  • Alan G. Marshall,

    1. Department of Chemistry & Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
    2. Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 32310-4005, USA
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  • William T. Cooper

    Corresponding author
    1. Department of Chemistry & Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
    • Department of Chemistry & Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA.
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Errata

This article is corrected by:

  1. Errata: Erratum: Comprehensive characterization of marine dissolved organic matter by Fourier transform ion cyclotron resonance mass spectrometry with electrospray and atmospheric pressure photoionization Volume 24, Issue 13, 1930, Article first published online: 2 June 2010

Abstract

We compare the ultrahigh resolution 9.4 T 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 © 2010 John Wiley & Sons, Ltd.

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