Determination of trace anions in concentrated hydrogen peroxide by direct injection ion chromatography with conductivity detection after Pt- catalyzed on-line decomposition

Do Hee Kim, Bo Kyung Lee, Dong Soo Lee

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A method has been developed for the determination of trace anion impurities in concentrated hydrogen peroxide. The method involves on-line decomposition of hydrogen peroxide, ion chromatographic separation and subsequent suppressed-type conductivity detection. H2O2 is decomposed in Pt-catalyst filled Gore-Tex membrane tubing and the resulting aqueous solution containing analytes is introduced to the injection valve of an ion chromatograph for periodic determinations. The oxygen gas evolving within the membrane tubing escapes freely through the membrane wall causing no problem in ion chromatographic analysis. Decomposition effiCiency is above 99.99% at a flow rate of 0.4mL/min for a 30% hydrogen peroxide concentration. Analytes are quantitatively retained. The analysis results for several brands of commercial hydrogen peroxides are reported.

Original languageEnglish
Pages (from-to)696-700
Number of pages5
JournalBulletin of the Korean Chemical Society
Issue number6
Publication statusPublished - 1999 Jun 20


All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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