Journal of Photoscience

Korean Society of Photoscience (한국광과학회)
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A Chemiluminescence Method for the Determination of Ascorbic Acid based upon Its Reaction with Cerium(IV) in the Presence of $Ru(bipy)_3^{2+}$

  • Lee, Sang-Hak (Department of Chemistry, Kyungpook National University) ;
  • Bae, Hyun-Sook (Department of Sensor and Display Engineering, Kyungpook National University) ;
  • karim, Mohammad-Mainul (Department of Chemistry, Kyungpook National University) ;
  • Kim, Chang-Jin (Department of Chemistry, Daegu University) ;
  • Kim, Young-Sun (Department of Sensor and Display Engineering, Kyungpook National University) ;
  • Lee, Hyun-Sook (Department of Sensor and Display Engineering, Kyungpook National University) ;
  • Hong, Sang-Beom (Department of Sensor and Display Engineering, Kyungpook National University)
  • Published : 2005.12.31
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Abstract

A chemiluminescence (CL) method for the determination of ascorbic acid was proposed, which is based on the enhancement of the CL intensity of $Ru(bipy)_3^{2+}$ - Ce (IV) system with the addition of ascorbic acid. The CL intensity is proportional to the concentration of ascorbic acid in the range of $1{\times}10^{-10}\;to\;1{\times}10^{-5}M$ with a correlation coefficient of 0.9985. The detection limit is $3{\times}10^{-11}M$. The relative standard deviation (R.S.D.) of 10 determinations of 0.1 mM ascorbic acid was 1.75%. The proposed method has been successfully applied to the determination of ascorbic acid in the commercia] drinks. The possible mechanism of the CL reaction was studied.

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