Show simple item record

dc.contributor.authorWang, R.
dc.contributor.authorDruckenmüller, K.
dc.contributor.authorElbers, G.
dc.contributor.authorGuenther, K.
dc.contributor.authorCroué, Jean-Philippe
dc.identifier.citationWang, R. and Druckenmüller, K. and Elbers, G. and Guenther, K. and Croue, J. 2014. Analysis of aquatic-phase natural organic matter by optimized LDI-MS method. Journal of Mass Spectrometry. 49 (2): pp. 154-160.

The composition and physiochemical properties of aquatic-phase natural organic matter (NOM) are most important problems for both environmental studies and water industry. Laser desorption/ionization (LDI) mass spectrometry facilitated successful examinations of NOM, as humic and fulvic acids in NOM are readily ionized by the nitrogen laser. In this study, hydrophobic NOMs (HPO NOMs) from river, reservoir and waste water were characterized by this technique. The effect of analytical variables like concentration, solvent composition and laser energy was investigated. The exact masses of small molecular NOM moieties in the range of 200-1200 m/z were determined in reflectron mode. In addition, spectra of post-source-decay experiments in this range showed that some compounds from different natural NOMs had the same fragmental ions. In the large mass range of 1200-15 000 Da, macromolecules and their aggregates were found in HPO NOMs from natural waters. Highly humic HPO exhibited mass peaks larger than 8000 Da. On the other hand, the waste water and reservoir water mainly had relatively smaller molecules of about 2000 Da. The LDI-MS measurements indicated that highly humic river waters were able to form large aggregates and membrane foulants, while the HPO NOMs from waste water and reservoir water were unlikely to form large aggregates.

dc.publisherWiley InterScience
dc.titleAnalysis of aquatic-phase natural organic matter by optimized LDI-MS method
dc.typeJournal Article
dcterms.source.titleJournal of Mass Spectrometry
curtin.departmentCurtin Water Quality Research Centre
curtin.accessStatusFulltext not available

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record