کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399517 | 1505903 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new chemiluminescence method for determination of dicyandiamide based on the N-bromosuccinimide-merbromin-cetyltrimethylammonium bromide system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
A novel and highly sensitive chemiluminescence (CL) 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 5.0Ã10â8 g mLâ1 to 3.0Ã10â6 g mLâ1. The detection limit, at the signal-to-noise ratio of 3, was 3.0Ã10â9 g mLâ1. The relative standard deviation was 1.9% for 11 repeated determinations of 1.0Ã10â6 g mLâ1 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 hâ1. The possible mechanism of the CL reaction was also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 327-332
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 327-332
نویسندگان
Hua Yu, Yuhai Tang, Guangbin Zhang, Zhongcheng Wang, Ruixia Gao,