A novel tris(2,2′-bipyridine)ruthenium(II)/tripropylamine cathodic electrochemiluminescence in acetonitrile for the indirect determination of hydrogen peroxide |
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| Authors: | Baiqing Yuan Tianyan You |
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| Institution: | a State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, PR China
b Pediatric Endocrinology and Metabolism Department, the First Hospital of Jilin University, Changchun, Jilin 130021, PR China |
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| Abstract: | A novel tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)32+) cathodic electrochemiluminescence (ECL) was generated at −0.78 V at the Pt electrode in acetonitrile (ACN), which suggested that the cathodic ECL differed from conventional cathodic ECL. It was found that tripropylamine (TPrA) could enhance this cathodic ECL and the linear range (log-log plot) was 0.2 μM-0.2 mM. In addition, hydrogen peroxide (H2O2) could inhibit the cathodic ECL and was indirectly detected with the linear range of 27-540 μM. The RSD (n = 12) of the ECL intensity in the presence of 135 μM H2O2 was 0.87%. This method was also demonstrated for the fast determination of H2O2 in disinfectant sample and satisfactory results were obtained. |
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| Keywords: | Acetonitrile Cathodic electrochemiluminescence Hydrogen peroxide Inhibition Tripropylamine Tris(2 2&prime -bipyridine)ruthenium(II) |
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