A Highly Sensitive Enzymatic Assay Method for Hypoxanthine Estimation Based on the Use of an Oxygen Electrode

Jong Min Kim*, Masayasu Suzuki, Rolf D. Schmid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Using a Clark-type oxygen electrode as sensor, a highly sensitive enzymatic assay method for hypoxanthine was developed, based on xanthine oxidase. The sensitivity of the assay is comparable to that of standard chemiluminescent techniques. The incorporation of sulfite, 0 to 150 mM, allowed hypoxanthine determination over the range of 5 nM to 100 μM. The response time was 4 min or less at 30°C.

Original languageEnglish
Pages (from-to)2433-2443
Number of pages11
JournalAnalytical Letters
Volume22
Issue number11-12
DOIs
StatePublished - 1989/01

Keywords

  • Hypoxanthine
  • oxygen electrode
  • sulfite
  • xanthine
  • xanthine oxidase assay

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Spectroscopy
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry

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