HIGH RESOLUTION ELECTROSPRAY IONIZATION MASS SPECTROMETRY AND 2D SOLUTION NMR FOR THE ANALYSIS OF DOM EXTRACTED BY C18 SOLID PHASE DISK
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dc.contributor.author | Kim S. | |
dc.contributor.author | Simpson A.J. | |
dc.contributor.author | Kujawinski E.B. | |
dc.contributor.author | Freitas M.A. | |
dc.contributor.author | Hatcher P.G. | |
dc.date.accessioned | 2022-02-22T05:08:04Z | |
dc.date.available | 2022-02-22T05:08:04Z | |
dc.date.issued | 2003 | |
dc.identifier | https://elibrary.ru/item.asp?id=31238694 | |
dc.identifier.citation | Organic Geochemistry, 2003, 34, 9, 1325-1335 | |
dc.identifier.issn | 0146-6380 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/35659 | |
dc.description.abstract | We propose and demonstrate an approach involving use of C18 solid phase disk extraction coupled with high resolution mass spectrometry for obtaining non-invasive molecular level information on dissolved organic matter (DOM) from river water. With this approach, DOM extraction from acidified natural water can be achieved rapidly with a simple filtration setup at a remote field site. From total organic carbon and UV-Vis absorbance measurements, we show that a large portion (over 60%) of the original DOM in water is recovered without the interference of salts. NMR analysis indicates that the C18-isolated material has a similar distribution of functional groups as the original DOM but 2-D NMR details are greatly enhanced. Electrospray ionization mass spectrometry and high resolution mass spectrometry were employed to study DOM at molecular level. Highly resolved mass spectra of DOM (resolving power > 80,000 at m/z <600) reveal that there are many pairs of peaks that differ by the exact masses of –H2, –O, or –CH2 indicative of possible homologous series of structures. | |
dc.title | HIGH RESOLUTION ELECTROSPRAY IONIZATION MASS SPECTROMETRY AND 2D SOLUTION NMR FOR THE ANALYSIS OF DOM EXTRACTED BY C18 SOLID PHASE DISK | |
dc.type | Статья |
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