A novel technique for NACE coupled with simultaneous electrochemiluminescence and electrochemical detection for fast analysis of tertiary amines

作者：Yuan, Baiqing; Huang, Jianshe; Sun, Jinying; You, Tianyan^*

来源：Electrophoresis, 2009, 30(3): 479-486.

DOI：10.1002/elps.200800253

• Electrochemical detection
• Electrochemiluminescence detection
• NACE
• Tertiary amines
• Tris(2, 2 '-bipyridyl)ruthenium(II)

A simultaneous electrochemiluminescence (ECL) and electrochemical (EC) detection scheme for NACE was presented for fast analysis of tertiary amines. Both ECL and EC signals were generated at the same Pt electrode. Triethylamine (TEA), tripropylamine (TPrA), chlorpromazine, promethazine, and dioxopromethazine (DPZ) were selected to validate NACE-ECL/EC dual detection strategy. The linear ranges for TEA and TPrA were 0.01-500 and 0.01-10 mu M with the detection limits of 8.0 and 5.0 nM (S/N=3), respectively. The RSDs (n = 6) of the migration time and the ECL intensity for 1 mu M TEA and 0.5 mu M TPrA were 0.1 and 2.8%, and 0.2 and 1.8% with theoretical plate numbers of 180 000 and 700 000 per meter, respectively. These two analytes could be separated within 92 s and the Pt electrode did not need reactivation during the experiments. Chlorpromazine, promethazine, and DPZ could be well separated by NACE. The proposed method was also demonstrated for fast determination of DPZ in human urine with simple sample preparation. The results indicated that NACE-ECL/EC had the advantages of simple and fast analysis with more information, wide linear range, high sensitivity, and compatibility with real urine sample.

• 出版日期2009-2
• 单位中国科学院长春应用化学研究所; 电分析化学国家重点实验室