A new chemiluminescence method for determination of dicyandiamide based on the N-bromosuccinimide-merbromin-cetyltrimethylammonium bromide system

作者：Yu, Hua; Tang, Yuhai^*; Zhang, Guangbin; Wang, Zhongcheng; Gao, Ruixia

来源：Journal of Luminescence, 2015, 157: 327-332.

DOI：10.1016/j.jlumin.2014.08.063

• Flow injection
• Chemiluminescence
• Merbromin
• Dicyandiamide

A novel and highly sensitive chemiluminescence (a) method for the determination of dicyandiamide (DCD) has been developed based on the new CL system of N-bromosuccinimide-merbromin-cetyltrimethylammonium bromide in alkaline solution. Experiment conditions were optimized using central composite design-response surface methodology. Under the optimal conditions, the relative CL intensity was linear with the concentration of DCD ranging from 5.0 x 10(-8) g mL(-1) to 3.0 x 10(-6) g mL(-1). The detection limit, at the signal-to-noise ratio of 3, was 3.0 x 10(-8) g mL(-1). The relative standard deviation was 1.9% for 11 repeated determinations of 1.0 x 10(-8) g mL(-1) DCD. The proposed method was successfully applied to the analyses of DCD in tap water and milk products. And the recoveries were in the range of 87.0-102.3% with relative standard deviation values of 1.2-2.9%. Moreover, the minimum sampling rate was 120 samples h(-1). The possible mechanism of the CL reaction was also discussed.

• 出版日期2015-1
• 单位西安交通大学