Determination of riboflavin in urine by capillary electrophoresis-blue light emitting diode-induced fluorescence detection combined with a stacking technique

An Kai Su, Cheng Huang Lin

Research output: Contribution to journalArticle

58 Citations (Scopus)


A simple, inexpensive and reliable method for the simultaneous, routine analysis of riboflavin in urine by capillary electrophoresis-light emitting diode (LED)-induced fluorescence detection is described. Using a blue LED as the light source, the detection limit of riboflavin was determined to be 0.48 μg/ml and was improved to 20 ng/ml when a stacking technique was applied. In the analysis of an actual sample, various concentrations of riboflavin were distributed in the urine samples over a period of 9 h after the ingestion of a vitamin B2 tablet.

Original languageEnglish
Pages (from-to)39-46
Number of pages8
JournalJournal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
Issue number1
Publication statusPublished - 2003 Feb 25



  • Blue light emitting diode
  • Riboflavin

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Cell Biology

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