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dc.contributor.authorAllpike, Bradley
dc.contributor.authorHeitz, Anna
dc.contributor.authorJoll, Cynthia
dc.contributor.authorKagi, Robert
dc.identifier.citationAllpike, Bradley P. and Heitz, Anna and Joll, Cynthia A. and Kagi, Robert I. 2007. A new organic carbon detector for size exclusion chromatography. Journal of Chromatography A 1157: pp. 472-476.

A novel organic carbon detector (OCD) for size exclusion chromatography (SEC), and its application to the characterisation of aquatic natural organic matter (NOM) in natural and treated potable water samples, is described. The instrument uses a conventional UV-persulfate oxidation technique to convert organic carbon to CO2. The novelty of the technique is detection of the evolved CO2 using a sensitive Fourier transform infrared (FTIR) spectroscopy 'lightpipe' detector originally designed for detection of analytes after gas chromatographic separation. With the exception of the lightpipe, the OCD system was constructed using simple, inexpensive, readily available components. The system was designed to minimise deadvolume, allowing for use of smaller sample sizes and smaller columns, substantially shortening analysis time, while maintaining chromatographic integrity through the OCD system. Downscaling resulted in some loss of separation but it was shown that this was caused by thelower separation efficiency of the smaller capacity column, rather than from sample dispersion within the OCD system.

dc.subjectSize exclusion chromatography (SEC)
dc.subjectNatural organic matter (NOM)
dc.subjectOrganic carbon detector
dc.subjectFourier transform infrared spectroscopy (FTIR)
dc.subjectDissolved organic carbon (DOC)
dc.titleA new organic carbon detector for size exclusion chromatography.
dc.typeJournal Article
dcterms.source.titleJournal of Chromatography A

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Copyright © 2007 Elsevier B.V. All rights reserved

curtin.accessStatusFulltext not available
curtin.facultyDepartment of Applied Chemistry
curtin.facultySchool of Science and Computing
curtin.facultyFaculty of Science and Engineering

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