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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
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 Lâ1 KH2PO4-Na2HPO4 buffer solution at pH 6.47 of 3.0Ã10â5 mol Lâ1 QDs. When the concentration of quantum dots is 3.0Ã10â5 mol Lâ1 the fluorescence quenching intensity of QDs is linearly proportional to the concentration of SPFX from 0.5 μg mLâ1 to 30 μg mLâ1, with correlation coefficient R=0.9983. The detection limit for SPFX was 0.1391 μg mLâ1. 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
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 58-62
نویسندگان
Ming Hou, Xiaoya Yan, Ling Xiong,