کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7585280 | 1492034 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Detection of Fe(III)EDTA by using photoluminescent carbon dot with the aid of Fâ ion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Iron(III) ethylenediaminetetraacetate (Fe(III)EDTA) is widely used in iron fortification for reducing iron deficiency, and its determination is urgently needed. The present work developed a fluorescent method to straightforwardly determine Fe(III)EDTA by using photoluminescent carbon dots (C-dots) with the aid of Fâ ions as the masking agent of free Fe3+ ions. In the presence of Fâ ions, only Fe(III)EDTA selectively quenched the photoluminescence of C-dots, and both Fe3+ and Fe2+ as well as other carboxylic acids have no effect on the emission of C-dots. The sensing mechanism was attributed to the ligand-tailored electron transfer process from C-dots to Fe3+. Under optimum conditions, this method showed a linear calibration plot over the Fe(III)EDTA range of 1.0-200â¯Î¼molâ¯Lâ1 and a detection limit of 0.4â¯Î¼molâ¯Lâ1. The proposed method was successfully applied to determine Fe(III)EDTA in real samples with acceptable recoveries of spikes (95%â110%) and repeatability (RSD, 4.2%â9.5%).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 258, 30 August 2018, Pages 51-58
Journal: Food Chemistry - Volume 258, 30 August 2018, Pages 51-58
نویسندگان
Nan Wang, Huijuan Chai, Xuelin Dong, Qian Zhou, Lihua Zhu,