Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Determination of Sub-nmol Hydrogen Peroxide by Electrochemiluminescence of Luminol in Aqueous Solution
Sachiko SAKURAHideo IMAI
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1988 Volume 4 Issue 1 Pages 9-12

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Abstract
An electrochemiluminescence method was developed for determination of sub-nmol hydrogen peroxide in aqueous solution. Luminol was electrochemically oxidized, then reacted with hydrogen peroxide; it emitted light of the maximum wavelength of 436nm with a half-life of less than 0.2s from the electrode surface. In flow injection analysis a carrier solution (phosphate buffer, pH 7-9) containing 17μM luminol was delivered at the flow rate of 0.5ml/min. The luminescence was detected by a photon counter in a spiral cell under the applied potential of 0.7V vs. SCE. A straight line calibration plot was obtained with good reproducibility [RSD 1.6% (n=5)] in the concentration range of 0.066 to 0.6nmol.
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© The Japan Society for Analytical Chemistry
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