کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6661564 | 1426552 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Alumina/graphene/Cu hybrids as highly selective sensor for simultaneous determination of epinephrine, acetaminophen and tryptophan in human urine
ترجمه فارسی عنوان
آلومینا / گرافن / کرومبوک ها به عنوان سنسور بسیار انتخابی برای تعیین همزمان اپی نفرین، استامینوفن و تریپتوفان در ادرار انسان
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کلمات کلیدی
سنسور الکتروشیمیایی، گرافن، ولتاژ سنجی پالس دیفرانسیل، استامینوفن، اپینفرین، تریپتوفان،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
A highly selective electrochemical sensor representing alumina/graphene/Cu hybrid structure was fabricated by electrodeposition of copper nanoparticles on graphene encapsulated alumina nanofibers and was employed for the simultaneous determination of epinephrine (EP), acetaminophen (AP) and l-tryptophan (Trp) with low instrumental detection limits (LOD) and wide linear ranges. Cyclic voltammetry, electrochemical impedance spectroscopy, differential pulse voltammetry and chronoamperometry methods were used to study electrochemical properties of the developed electrode. Well-separated oxidation peaks and enhanced peak currents of EP, AP, and Trp were observed owing to the superior conductivity of highly foliated multi-layered graphene and the excellent catalytic activity of Cu nanoparticles. Specifically, the separation of anodic peak potentials for EP-AP, AP-Trp and EP-Trp were 160, 274 and 434â¯mV vs. SCE, respectively. The peak currents linearly depended on EP, AP and Trp concentrations in the range of 1-1200, 1-700 and 1-1000â¯Î¼M with LOD of 0.027, 0.012 and 0.009â¯Î¼M, respectively (Sbk/mâ¯=â¯3). The chemically modified electrode was successfully challenged with some interfering compounds and was evaluated in human urine sample for determination of EP, AP and Trp demonstrating outstanding stability and repeatability. Fabricated sensor is an appropriate candidate for the pharmaceutical applications and clinical investigations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 823, 15 August 2018, Pages 184-192
Journal: Journal of Electroanalytical Chemistry - Volume 823, 15 August 2018, Pages 184-192
نویسندگان
Masoud Taleb, Roman Ivanov, Sergei Bereznev, Sayed Habib Kazemi, Irina Hussainova,