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Do we need a catalyst in the determination of dissolved organic carbon in environmental samples?

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Abstract

The high temperature oxidation (HTO) technique is at present the preferred method for analysis of dissolved organic carbon (DOC) in environmental samples. There are two modes of oxidation being used, one with a platinum catalyst and the other without it. In this study, the performance of the HTO carbon analyzer has been compared in the presence and absence of a platinum-based catalyst. Analyses of natural water samples and reference standards show that removal of the catalyst results in lower oxidation efficiency in samples of high organic content. As a result, different calibration slopes were obtained. A measurable difference between DOC values obtained with and without the catalyst occurred at concentrations above 0.3 mM C.

Graphical abstract: Do we need a catalyst in the determination of dissolved organic carbon in environmental samples?

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Publication details

The article was received on 17 May 2018, accepted on 28 May 2018 and first published on 29 May 2018


Article type: Technical Note
DOI: 10.1039/C8AY01121D
Citation: Anal. Methods, 2018, Advance Article
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    Do we need a catalyst in the determination of dissolved organic carbon in environmental samples?

    W. Grzybowski, P. Tarasiewicz, K. Łukawska-Matuszewska and A. Szewczun, Anal. Methods, 2018, Advance Article , DOI: 10.1039/C8AY01121D

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