Raczyk-Stanislawiak, U., Swietlik, J., Kasprzyk-Hordern, Barbara and Nawrocki, J. (2003) The Efficiency of Different Oxidation Methods in Total Organic Carbon Analysis. Chemia Analityczna - Chemical Analysis, 48 (2). pp. 243-254.

TOC analysis is required for the quality of drinking water and sewage assessment. The
analysis is thought to be questionable, since there are many commercially available TOC
analysers, employing different oxidation methodologies. The authors have made an attempt
to compare the efficiency of three TOC analysers: TOC 1010, LABTOC, and GO�TOC 100
utilising different oxidation methods, such as: persulfate/100°C, persulfate/UV and hightemperature
oxidation, respectively. Humic acid, polyacryloamide flocculants and perfluorooctanoic
acid were used as model compounds. None of the examined apparatus led to
their complete oxidation. The influence of pre-oxidation with ozone and chlorine dioxide
on the efficiency of the subsequent TOC analysis was investigated and was found to cause
better combustion of the organic carbon. The storage time of the samples treated with phosphoric
acid did not influence the efficiency of TOC analysis.

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