A novel microfluidic paper – based device with colorimetric assay for determination of catechol using poly(N-vinylpyrrolidone) -capped silver nanoparticles
محل انتشار: بیستمین کنگره شیمی ایران
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 377
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شناسه ملی سند علمی:
IRANCC20_558
تاریخ نمایه سازی: 28 اردیبهشت 1398
چکیده مقاله:
Due to the harmfulness of catechol to the environment and human health, various analytical methods have been developed for its determination, including electrochemiluminescence, spectrophotometry, gas chromato-graphy, electrochemistry, capillary electrophoresis and high performance liquid chromatography(HPLC)[1]. However, these methods suffer from sophisticated operations and expensive instrumentations. In this work, a paper based device [2] was fabricated that can rapidly detect very low concentration of catechol using modified silver nanoparticles that were synthesized by facile PVP-stabilized method [3]. AgNPs paper-based sensor changed from light yellow to dark grey color after the addition of catechol due to nanoparticle growth and clusters formation. Two-dimensional optical scanners have been used as a low-cost detection system. Under optimized measurement conditions, the color intensities were altered as a function of catechol concentration. The color intensity change was linear with catechol concentration over the range of 50 μM–0.9 mM with a correlation coefficient of 0.993. This colorimetry method can detect as low as 5μM of analyte within <30 minutes on a white filter paper which was comparable to analytical laboratory-based methodologies. The proposed method was successfully applied for the determination of catechol in real samples, including tap water, perfume and cigarette smoke and satisfactory results was obtained.
نویسندگان
Aysir Neamat Alhmaunde
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
Masoomeh Esmaelpourfarkhani
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
Akram Hajinia
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
Tahereh Heidari
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran