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http://dx.doi.org/10.5012/jkcs.2002.46.2.145

Determination of Cr(Ⅲ) Iron by Chemiluminescence Method  

Lee, Sang Hak (Department of Chemistry, Kyungpook University)
Ju, Ik Su (Department of Chemistry, Kyungpook University)
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Abstract
A Method to determine Cr(III)ion in aqueous solution by chemiluminescence method using a stopped flow system has been studied. The method is based on the increased chemiluminescence intensity with the addition of Cr(III) to a solution of lucigenin a nd hyrogen peroxide. The effects of pH, injection volumes of reagent and sample, and concentration of lucigenin and hyrogen peroxide on the chemiluminescence intensity have been investigated. The calibration curve for Cr(III) ion was linear over the range from 1.0${\times}$$10^{-6}$ to 1.0${\times}$$10^{-3}$M and the detection limit was 5.2${\times}$$10^{-8}$M under the optimal experimental condition of 437nm, 12.8,and 1.0${\times}$$10^{-6}$ and 2.0M for emission wavelength, pH, and concentration of lucigenin and hyrogen peroxide, respectively.
Keywords
lucigenin; chemiluminescence; lucigenin; Cr(III) ion;
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