Development of Portable-Type Electrode for the Determination of Highly Concentrated Hydrogen Peroxide

휴대용 고농도 과산화수소 측정 전극의 개발

  • Lee, Jin Seo (Department of Chemistry, Kwangwoon University) ;
  • Cui, Gang (Department of Chemistry, Kwangwoon University) ;
  • Kim, Sang Jin (Department of Chemistry, Kwangwoon University) ;
  • Cha, Geun Sig (Department of Chemistry, Kwangwoon University) ;
  • Nam, Hakhyun (Department of Chemistry, Kwangwoon University) ;
  • Rho, Kyung Lae (Oriental Chemical Industries, Research Center) ;
  • Kim, Jin Doo (Oriental Chemical Industries, Research Center)
  • 이진서 (광운대학교 이과대학 화학과) ;
  • 최강 (광운대학교 이과대학 화학과) ;
  • 김상진 (광운대학교 이과대학 화학과) ;
  • 차근식 (광운대학교 이과대학 화학과) ;
  • 남학현 (광운대학교 이과대학 화학과) ;
  • 노경래 (동양화학(주), 중앙연구소, 분석화학 실험실) ;
  • 김진두 (동양화학(주), 중앙연구소, 분석화학 실험실)
  • Received : 1998.12.30
  • Published : 1999.04.25


Portable-type two electrode system for the determination of highly concentrated hydrogen peroxide (10-75%) has been studied. The electrode body was made with teflon rod (length=10 cm, diameter=1.5 cm) to withstand the highly corrosive power of hydrogen peroxide. Glass carbon rod (diameter=3 mm) was used as the working electrode and a carbon cylinder (i.d.=5 mm; o.d.=9 mm) was used as counter electrode. The applied voltage for the determination of $H_2O_2$ was 0.8 V. Diluting the highly concentrated samples taken from the industrial batch to 10% or less, it was possible to make quantitative determinations, while eliminating the interference from the stabilizer contained in the sample and preventing the surface of the electrode from oxidative corrosion. Employing hydrogen peroxide permeable membrane (teflon membrane${\leq}100{\mu}m$) for the electrode system, it was possible to measure the content of $H_2O_2$ in highly concentrated samples directly, quantitatively and reproducibly with no extra dilution step. However, it was necessary to change the internal electrolyte frequently to maintain the analytical performance of the electrode.


determination of hydrogen peroxide;glass carbon electrode;hydrogen peroxide permeable membrane


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