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
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
A new chemiluminescence method for determination of dicyandiamide based on the N-bromosuccinimide-merbromin-cetyltrimethylammonium bromide system
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 5.0×10−8 g mL−1 to 3.0×10−6 g mL−1. The detection limit, at the signal-to-noise ratio of 3, was 3.0×10−9 g mL−1. The relative standard deviation was 1.9% for 11 repeated determinations of 1.0×10−6 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 327-332
نویسندگان
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