Determination of nitric oxide by quenching electro-chemiluminescence of tris(2,2 ';-bipyridyl)ruthenium in flow injection analysis

作者：Chen Jingyuan^*; Miyake Masaki; Chi Yuwu; Nishiumi Toyohiko; Aoki Koichi

来源：Electroanalysis, 2007, 19(2-3): 181-184.

DOI：10.1002/elan.200603689

• electro-chemiluminescence
• nitric oxide
• flow injection apparatus
• tris(2,2 '
• -bipyridyl)ruthenium(II)
• gas pump

Quenching of the electro-chemiluminescence of the ruthenium complex was applied for detection of NO at the flow injection apparatus equipped with a homemade gas pressure pump with low noise and a flow-through electro-generated chemiluminescence (ECL) cell. NO quenched the ECL emission of Ru(bpy)(3)(2+) at the potential of the oxidation of Ru(bpy)(3)(2+) efficiently to set the detection limit of NO at 0.1% of concentration of Ru(bPY)(3)(2+). The decrease in ECL intensity is linearly dependent on the logarithmic concentration of NO in the range of 5.7 x 10(-7) M to 1.8 x 10(-5) M. Voltammetric and spectrometric analysis showed that NO was not coordinated to Ru(bpy)(3)(2+/3+), but catalyzed the quenching reaction.

• 出版日期2007-1