An ultrasensitive post chemiluminescence reaction of ammonium in NBS-dichlorofluorescein system and its application

作者：Nie Fei^*; Wang Na; Zheng Jianbin; Zhang Juncai

来源：Talanta, 2011, 84(4): 1063-1067.

DOI：10.1016/j.talanta.2011.03.005

• Post chemiluminescence
• Ammonium
• N-bromosuccinimide
• Dichlorofluorescein

A strong post chemiluminescence (PCL) phenomenon was observed when ammonium was injected into the reaction mixture after the finish of CL reaction of N-bromosuccinimide (NBS) and dichlorofluorescein. Based on this, a sensitive flow injection PCL method was established for the determination of ammonium. The possible CL mechanism of the reaction was proposed based on a series of experiments. The PCL intensity responded linearly to the concentration of ammonium in the range 3.0 x 10(-11)-1.0 x 10(-7) g mL(-1) with a detection limit of 1 x 10(-11) g mL(-1). The relative standard deviation (R.S.D.) was 1.4% for 1.0 x 10(-9) g mL(-1) ammonium (n = 11). This method had been applied to the determination of ammonium in samples of mineral water, tap water and river water.

• 出版日期2011-5-30
• 单位咸阳师范学院; 西北大学