کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5399474 1505903 2015 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of sparfloxacin with CdSe/CdS quantum dots as fluorescent probes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Determination of sparfloxacin with CdSe/CdS quantum dots as fluorescent probes
چکیده انگلیسی
Water-soluble CdSe/CdS quantum dots (QDs) modified with thioglycolic acid (TGA) were synthesized. A novel method for determination of sparfloxacin (SPFX) has been developed based on quenching of the fluorescence of QDs at 556 nm wavelength. The optimum fluorescence intensity was found in 0.067 mol L−1 KH2PO4-Na2HPO4 buffer solution at pH 6.47 of 3.0×10−5 mol L−1 QDs. When the concentration of quantum dots is 3.0×10−5 mol L−1 the fluorescence quenching intensity of QDs is linearly proportional to the concentration of SPFX from 0.5 μg mL−1 to 30 μg mL−1, with correlation coefficient R=0.9983. The detection limit for SPFX was 0.1391 μg mL−1. The method was used for determination of SPFX in tablets, and the results agreed with the claimed value. Trace amounts of SPFX in milk were also determined with the recovery of 95.3-106.8%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 58-62
نویسندگان
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