کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148841 | 1462105 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemiluminescence microfluidic system on a chip to determine vitamin B1 using platinum nanoparticles triggered luminol-AgNO3 reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A novel and sensitive chemiluminescence (CL) method on a microchip has been presented for the determination of vitamin B1 (VB1). The microchip was fabricated by soft lithographic procedure using polydimethyl siloxane (PDMS) having four inlets and one outlet with a 200 μm wide, 250 μm height, 6 mm diameter and 100 mm long microchannel. The method is based on the enhanced CL intensity of luminol by its oxidation with AgNO3 in the presence of platinum nanoparticles (PtNPs). It was found that the oxidation of luminol with AgNO3 by PtNPs produced strong CL signal at about 425 nm which meant that the luminophore was still 3-aminopthalate. The CL intensity of the luminol-AgNO3-PtNPs system was further increased with the addition of VB1. Under optimum conditions, the CL intensity was increased by increasing the concentration of VB1 in the range of 1.0 Ã 10â7 to 4.0 Ã 10â5 mol Lâ1 with a correlation coefficient of 0.9992. The limit of detection was found to be 4.8 Ã 10â9 mol Lâ1 with the relative standard deviation of 1.06%. The method was successfully applied to determine VB1 in vitamin B1 tablets and vitamin B complex tablets. The interaction mechanism of the CL system has been proposed by UV-vis spectra and CL emission spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 301-308
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 301-308
نویسندگان
Mohammad Kamruzzaman, Al-Mahmnur Alam, Sang Hak Lee, Trung Dung Dang,