Abstract
High-field (9.4 T) Fourier transform ion cyclotron resonance (FT-ICR) mass spectra of standard Suwannee River humic and fulvic acids have been obtained by use of laser desorption (LDI) and electrospray (ESI) ionization. The LDI-FT-ICR mass spectrum was similar to those observed previously, with ions at essentially every nominal value, 200 {lt} m/z {lt} 800. In contrast, the ESI FT-ICR mass spectrum, although still containing ions at most values in the 200 {le} m/z {le} 800 range, was dominated by relatively few prominent species. ESI FT-ICT mass spectra of standard humic and fulvic acid isolates were similar. Although many ionic species appeared in both fulvic acid and humic acid ESI FT-ICR mass spectra, the fulvic acid mass spectrum contain more highly charged species. Subfractions of the fulvic acid isolated by an HPLC procedure yielded similar mass spectra. The stability of high-mass ions produced by ESI combined with the high-mass resolution capability of FT-ICR MS allow for precise determination of molecular masses, from which molecular formulas may be obtained by mass alone. Future two-dimensional FT-ICR MS{sup 2} determinations of humic and fulvic acid structures should be feasible by use of collisionally induced and multiple-photon dissociation techniques. 34 refs., 9 figs., 3 tabs.
Fievre, A;
Solouki, T;
Marshall, A G;
Cooper, W T
[1]
- Florida State University, Tallahassee, FL (United States). Dept. of Chemistry
Citation Formats
Fievre, A, Solouki, T, Marshall, A G, and Cooper, W T.
High-resolution Fourier transform ion cyclotron resonance mass spectrometry of humic and fulvic acids by laser desorption/ionization and electrospray ionization.
United States: N. p.,
1997.
Web.
doi:10.1021/ef970005q.
Fievre, A, Solouki, T, Marshall, A G, & Cooper, W T.
High-resolution Fourier transform ion cyclotron resonance mass spectrometry of humic and fulvic acids by laser desorption/ionization and electrospray ionization.
United States.
https://doi.org/10.1021/ef970005q
Fievre, A, Solouki, T, Marshall, A G, and Cooper, W T.
1997.
"High-resolution Fourier transform ion cyclotron resonance mass spectrometry of humic and fulvic acids by laser desorption/ionization and electrospray ionization."
United States.
https://doi.org/10.1021/ef970005q.
@misc{etde_496279,
title = {High-resolution Fourier transform ion cyclotron resonance mass spectrometry of humic and fulvic acids by laser desorption/ionization and electrospray ionization}
author = {Fievre, A, Solouki, T, Marshall, A G, and Cooper, W T}
abstractNote = {High-field (9.4 T) Fourier transform ion cyclotron resonance (FT-ICR) mass spectra of standard Suwannee River humic and fulvic acids have been obtained by use of laser desorption (LDI) and electrospray (ESI) ionization. The LDI-FT-ICR mass spectrum was similar to those observed previously, with ions at essentially every nominal value, 200 {lt} m/z {lt} 800. In contrast, the ESI FT-ICR mass spectrum, although still containing ions at most values in the 200 {le} m/z {le} 800 range, was dominated by relatively few prominent species. ESI FT-ICT mass spectra of standard humic and fulvic acid isolates were similar. Although many ionic species appeared in both fulvic acid and humic acid ESI FT-ICR mass spectra, the fulvic acid mass spectrum contain more highly charged species. Subfractions of the fulvic acid isolated by an HPLC procedure yielded similar mass spectra. The stability of high-mass ions produced by ESI combined with the high-mass resolution capability of FT-ICR MS allow for precise determination of molecular masses, from which molecular formulas may be obtained by mass alone. Future two-dimensional FT-ICR MS{sup 2} determinations of humic and fulvic acid structures should be feasible by use of collisionally induced and multiple-photon dissociation techniques. 34 refs., 9 figs., 3 tabs.}
doi = {10.1021/ef970005q}
journal = []
issue = {3}
volume = {11}
journal type = {AC}
place = {United States}
year = {1997}
month = {May}
}
title = {High-resolution Fourier transform ion cyclotron resonance mass spectrometry of humic and fulvic acids by laser desorption/ionization and electrospray ionization}
author = {Fievre, A, Solouki, T, Marshall, A G, and Cooper, W T}
abstractNote = {High-field (9.4 T) Fourier transform ion cyclotron resonance (FT-ICR) mass spectra of standard Suwannee River humic and fulvic acids have been obtained by use of laser desorption (LDI) and electrospray (ESI) ionization. The LDI-FT-ICR mass spectrum was similar to those observed previously, with ions at essentially every nominal value, 200 {lt} m/z {lt} 800. In contrast, the ESI FT-ICR mass spectrum, although still containing ions at most values in the 200 {le} m/z {le} 800 range, was dominated by relatively few prominent species. ESI FT-ICT mass spectra of standard humic and fulvic acid isolates were similar. Although many ionic species appeared in both fulvic acid and humic acid ESI FT-ICR mass spectra, the fulvic acid mass spectrum contain more highly charged species. Subfractions of the fulvic acid isolated by an HPLC procedure yielded similar mass spectra. The stability of high-mass ions produced by ESI combined with the high-mass resolution capability of FT-ICR MS allow for precise determination of molecular masses, from which molecular formulas may be obtained by mass alone. Future two-dimensional FT-ICR MS{sup 2} determinations of humic and fulvic acid structures should be feasible by use of collisionally induced and multiple-photon dissociation techniques. 34 refs., 9 figs., 3 tabs.}
doi = {10.1021/ef970005q}
journal = []
issue = {3}
volume = {11}
journal type = {AC}
place = {United States}
year = {1997}
month = {May}
}