Electrochemiluminescent determination of nicotine based on tri(2,2′-bipyridyl) ruthenium (II) complex through flow injection analysis
學年 97
學期 1
出版（發表）日期 2008-11-01
作品名稱 Electrochemiluminescent determination of nicotine based on tri(2,2′-bipyridyl) ruthenium (II) complex through flow injection analysis
作品名稱（其他語言）
著者 Lin, Meng-shan; Wang,Jun-sheng; Lai, Chien-hung
單位 淡江大學化學學系
出版者 Kidlington: Pergamon
著錄名稱、卷期、頁數 Electrochimica Acta 53(26), pp.7775–7780
摘要 This paper describes the electrogenerated chemiluminescence (ECL) processes of Ru(bpy)32+/nicotine system at ITO working electrode. An ECL-based method for rapid and sensitive detection of nicotine in phosphate buffer solution at pH 8.0 is established. Strong ECL emission was observed at a positive potential of 1.4 V vs. Ag/AgCl. A possible ECL mechanism is proposed for the Ru(bpy)32+/nicotine system, the oxidation product of nicotine at the electrode surface reacts with the 3+ state of ruthenium bipyridyl (2+) complex and form ruthenium complex exited state ions and thus releases photons. Effect of pH (medium/electrolyte), working potential, buffer composition, buffer concentration, reactant and co-reactant (nicotine) concentration, flow rate and loop size on the ECL spectrum of the Ru(bpy)32+/nicotine were studied. At the optimized experimental conditions, lower detection limit for nicotine was observed as 1.2 nmol L−1 (S/N = 3). Linear relationship between ECL current and concentration of nicotine was observed (up to 100 μmol L−1) with R-value of 0.997. The relative standard deviation with 5 μmol L−1 concentration of nicotine for 20 analyses was only 1.4%. A 94% recovery rate was observed in a real sample analysis without any complications/disturbance in measurement. Interferences of humid acid, camphor and SDS were not observed in their presence in the sample solution. The established procedure for nicotine quantification manifests fascinating results and can be suggested for further applications.
關鍵字 Electro-generated chemiluminescence; Nicotine; FIA-ECL analysis; Ruthenium bipyridyl (2+) complex
語言 en_US
ISSN 0013-4686
期刊性質 國外
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國別 GBR
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出版型式 電子版
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