摘要
研究了碘化 1 0 -乙羧基吖啶 -9-羧酸苯酯 ( CACPEI)的电致化学发光行为 .结果表明 ,在 KNO3 介质中 ,于 Pt电极上施加正矩形脉冲电压时 ,1 0 -乙羧基吖啶 -9-羧酸苯酯产生很强的电致化学发光 ( ECL)信号 ,信号强弱受电化学参数和发光反应条件的影响 ,探讨了可能的发光机理 .在最佳条件下发光信号与 CACPEI的浓度在 5 .0× 1 0 - 1 0 ~ 1 .2× 1 0 - 7g/ m L范围内呈良好的线性关系 .检出限可达 2 .4× 1 0 - 1 0 g/ m L.
A study of the electrochemilluminescence(ECL) of 10-(carboxylethyl)-acridinium-9-carboxyl-phenyl-ester iodinate(CACPEI) in a neutral solution was carried out. It was found that CACPEI gives a strong ECL in KNO 3 solution when an appropriate voltage was applied on Pt electrode. The ECL signal was greatly influenced by the electrochemical parameters and the ECL reaction conditions. All the affecting factors were investigated in detail. Under the optimum conditions, the ECL intensity exhibited a good linear relationship with the concentration of CACPEI in the range of 5 0×10 -10-1 2×10 -7 g/mL. The detection limit of CACPEI was 2 4×10 -10 g/mL(S/N=3). The proposed ECL mechanism was discussed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第11期2063-2066,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金 (批准号 :2 9975 0 10 )资助