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

Waldemar Grzybowski , Paweł Tarasiewicz , Katarzyna Łukawska-Matuszewska , Aleksandra Szewczun

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.
Publication typeIn press (online first, early view)
Author Waldemar Grzybowski (FOG / IO / DMChEP)
Waldemar Grzybowski,,
- Division of Marine Chemistry and Environmental Protection
, Paweł Tarasiewicz (FOG / IO / DMChEP)
Paweł Tarasiewicz,,
- Division of Marine Chemistry and Environmental Protection
, Katarzyna Łukawska-Matuszewska (FOG / IO / DMChEP)
Katarzyna Łukawska-Matuszewska,,
- Division of Marine Chemistry and Environmental Protection
, Aleksandra Szewczun (FOG / IO / DMChEP)
Aleksandra Szewczun,,
- Division of Marine Chemistry and Environmental Protection
Journal seriesAnalytical Methods, ISSN 1759-9660, (A 25 pkt)
Issue year2018
Noonline first
Pages1-4
Publication size in sheets0.5
DOIDOI:10.1039/c8ay01121d
URL http://pubs.rsc.org/en/content/articlepdf/2018/ay/c8ay01121d
Languageen angielski
Score (nominal)25
ScoreMinisterial score = 25.0, 20-06-2018, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 20-06-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.9 (2) - 2016=1.893 (5)
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