غربالگری و بهینه سازی شرایط آزمایش برای اندازه گیری نقره بر اساس میکرواستخراج فاز مایع با حلال قابل تغییر
عنوان مقاله: غربالگری و بهینه سازی شرایط آزمایش برای اندازه گیری نقره بر اساس میکرواستخراج فاز مایع با حلال قابل تغییر
شناسه ملی مقاله: JR_IJAC-4-2_006
منتشر شده در شماره 2 دوره 4 فصل در سال 1396
شناسه ملی مقاله: JR_IJAC-4-2_006
منتشر شده در شماره 2 دوره 4 فصل در سال 1396
مشخصات نویسندگان مقاله:
Fereshteh Heydari - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
Majid Ramezani - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
Nasim Bayat - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
Maryam Ghalenoei - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
خلاصه مقاله:
Fereshteh Heydari - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
Majid Ramezani - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
Nasim Bayat - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
Maryam Ghalenoei - Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, P.O.Box: ۳۸۱۳۵-۵۶۷, Arak, Iran
A novel switchable-hydrophilicity solvent based liquid phase microextraction (SHS-LPME) coupled with flame atomic absorption spectrometry has been applied for preconcentration and extraction of Ag(I). In this study, Triethylamine (TEA) was selected as switchable solvent. The Ag (I)-1-(2-pyridylazo)-2-naphthol complex was extracted into organic phase by converting the protonated carbonate (P-TEA-C) to TEA. The experimental conditions were optimized using Plackett–Burman and Box–Behnken design methods. Under the optimum conditions, the detection limit, relative standard deviation and the enrichment factor were 0.35 μg L-1, 1.4% and 68, respectively. The calibration graph was linear over the range 2 to 500 μg L-1 with correlation coefficient of 0.997. The proposed method was successfully applied to determine of trace silver in water samples.
کلمات کلیدی: Switchable-Hydrophilicity Solvent, Silver, Plackett–Burman and Box–Behnken Design, Water Samples
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/896366/