کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6607982 | 459535 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A New N-Heterocyclic Carbene Ionophore in Plasticizer-free Polypyrrole Membrane for Determining Ag+ in Tap Water
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A bis[1-benzyl-benzimidazoliumethyl]-4-methylbenzenesufonamide bromide ligand (NHCL) as a new type of ionophore was successfully synthesized for the first time and used for the fabrication of Ag+ ion selective electrode as a new type of ionophore, based on the self-plasticizing method. The ionophore was characterized using CHN elemental analysis, FT-IR, 1H NMR, 13C NMR, UV-vis spectroscopic techniques and X-ray single crystal diffraction. The interection between NHCL and Ag+ cation was studied spectrophotometerically and the stoichiometry of the complex (1:2) NHCL:Ag+ in DMSO solvent was determined. The potentiometric response of the electrode toward Ag+ cation was linear from 2.5 Ã 10â6 to 1.0 Ã 10â1 M with detection limit of 2.00 Ã 10â6 M and a Nernstian slope of 58.48 ± 0.75 mV decadeâ1. The sensor exhibited a response time of about 20 seconds at room temperature and working pH range between 3.5-9.0. The electrode showed a good selectivity towards Ag+ cations in comparison with other soft and hard metals, while most of these metal ions did not show significant interference (KAg+,Mpot). The proposed electrode also applied in the direct determination of Ag+ cations in tap water and standard samples with sensible accuracy and precision.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 197, 10 April 2016, Pages 10-22
Journal: Electrochimica Acta - Volume 197, 10 April 2016, Pages 10-22
نویسندگان
Nur Rahimah Said, Majid Rezayi, Leila Narimani, Nassir N. Al-Mohammed, Ninie Suhana Abdul Manan, Yatimah Alias,