کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1225037 967943 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flow injection determination of adenine at trace level based on luminol–K2Cr2O7 chemiluminescence in a micellar medium
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Flow injection determination of adenine at trace level based on luminol–K2Cr2O7 chemiluminescence in a micellar medium
چکیده انگلیسی

A novel flow injection chemiluminescence (CL) analysis method for the determination of adenine in the presence of sodium dodecylbenzene sulfonate (SDBS) surfactant micelles is described. This method is based on the luminescent properties of the luminol–K2Cr2O7–adenine in alkaline medium sensitized by SDBS. The optimized experimental conditions were evaluated and the possible mechanism was discussed by examining CL emission spectrum and the effect of various free radical scavengers on CL emission intensity. The CL increase is linearly related to the concentration of adenine in the range of 2.92 × 10−6 to 4.38 × 10−10 mol l−1 with a detection limit of 2.46 × 10−10 mol l−1 (S/N = 3). The relative standard deviation for 2.92 × 10−7 mol l−1 samples was 1.67% (n = 12). The proposed method has been applied to the determination of adenine in human serum.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical and Biomedical Analysis - Volume 41, Issue 2, 3 May 2006, Pages 649–653
نویسندگان
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