Electrospray ionisation-mass spectrometry of hydroxamate siderophores
Electrospray ionisation-mass spectrometry of hydroxamate siderophores
Electrospray ionisation mass spectrometry (ESI-MS) was applied to the detection of the iron complexes of the hydroxamate type siderophores ferrioxamine (FO), ferrichrome (FC) and iron (III) rhodotoluate (FR). Mass spectra of the three siderophores produced by ESI-MS were dominated by the protonated (M+1)+ parent ions, except for FR at pH 4.3, which was present as the positively charged 1:1 complex. On collision with He ions, fragmentation proceeded largely via cleavage of C-N nonds. Flow injection analysis of the siderophores with detection by ESI-MS produced detection limits of 1.9 fmol for FO, 31.1 fmol for FC and 524 fmol for FR.
iron, siderophores, complexation, mass spectrometry, seawater
1359-1362
Gledhill, M.
da795c1e-1489-4d40-9df1-fc6bde54382d
2001
Gledhill, M.
da795c1e-1489-4d40-9df1-fc6bde54382d
Gledhill, M.
(2001)
Electrospray ionisation-mass spectrometry of hydroxamate siderophores.
Analyst, 126 (8), .
(doi:10.1039/b101268l).
Abstract
Electrospray ionisation mass spectrometry (ESI-MS) was applied to the detection of the iron complexes of the hydroxamate type siderophores ferrioxamine (FO), ferrichrome (FC) and iron (III) rhodotoluate (FR). Mass spectra of the three siderophores produced by ESI-MS were dominated by the protonated (M+1)+ parent ions, except for FR at pH 4.3, which was present as the positively charged 1:1 complex. On collision with He ions, fragmentation proceeded largely via cleavage of C-N nonds. Flow injection analysis of the siderophores with detection by ESI-MS produced detection limits of 1.9 fmol for FO, 31.1 fmol for FC and 524 fmol for FR.
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Published date: 2001
Keywords:
iron, siderophores, complexation, mass spectrometry, seawater
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Local EPrints ID: 37715
URI: http://eprints.soton.ac.uk/id/eprint/37715
ISSN: 0003-2654
PURE UUID: bbcab822-a7f4-41c2-b0e0-224813581276
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Date deposited: 25 May 2006
Last modified: 15 Mar 2024 08:01
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Author:
M. Gledhill
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