Emad F. Newair is an Associate Professor of Analytical Chemistry at Chemistry Department, Faculty of Science at Sohag University. He received his Ph.D. in Analytical/Physical Chemistry from Sohag University, Egypt in 2013. His research interests focus on Electrochemistry of Polyphenol Antioxidants, Electrochemically Modified Electrodes, Liquid Chromatography/Mass Spectroscopy, Electrochemical Synthesis of Conducting Polymer, and Bioelectrochemistry. He has published his works in journals such as Journal of Electroanalytical Chemistry, Electroanalysis, European Food Research and Technology, Nanomaterials, and Beilstein Journal of Nanotechnology. In 2012, he has got a scholarship at Monash University, School of Chemistry in Australia for training on the application of modern electroanalytical techniques to finish his Ph.D. program. Finally, he received two Post-Doctoral Fellowships at Montpellier University, France in 2014 and 2016.
ANALYTICAL CHEMISTRY 434 & 452 CHEM 2019/2020 أسئلة إسترشادية لطلاب الفرقة الرابعة بكلية العلوم تاريخ نشر النموذج: 28/6/2020 أستاذ المقرر/ د. عماد نوير
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تتكون ورقة الإجابة (Answer Sheet) من سبعة أجزاء رئيسية وسوف نقوم بشرحها كما يلى:
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https://www.sarahah.com/messages/user/c720935c-92cf-4716-bc25-16367a26484b الرجاء ترك الرساله التى ترغب فى توصيلها لى وسوف اهتم بتنفيذها.
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إن شاء الله غدا الإثنين الموافق 15/10/2018 المحاضره هتكون فى مدرج ج من الساعه 12-2 ظهراً.
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أسماء طلاب الفرقة الرابعة لماده المقال والبحث لعام 2018/2019 والذى أتشرف بأن أكون مشرفاً عليهم وهم: احمد رجب عباس خلاف كيمياء خاص ساندي سامح سليمان صليب سلمى حاتم محمد عبد الرحمن سماح السيد محمود احمد سمر صفوت سعد شرف شروق فتحى انور بطرس كيمياء وعلم حيوان
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The metabolic oxidation pathways of dietary flavonoid eriodictyol (Er) are not very well-probed. In the present work, the electrochemical oxidation behavior of Er was studied in aqueous Britton-Robinson (B-R) buffer solution using cyclic voltammetry (CV), chronoamperometry (CA), and bulk-electrolysis (BE). The oxidation products and reaction pathways of Er in the absence and the presence of glutathione (GSH) were proposed and ...
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The polyphenols present in different French red wines were characterized electrochemically using square wave voltammetry (SWV). The voltammetric measurements were carried out using a glassy carbon electrode and disposable screen-printed carbon electrodes unmodified and modified with single- and multi-walled carbon nanotubes. The single-walled carbon nanotubes-modified screen-printed carbon electrode (SWCNTs-SPCE) showed the best results for the voltammetric analysis of polyphenols in ...
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A simple and rapid electrochemical method was established to quantify the total polyphenol (TP) content and assess their antioxidant activity (AA) in roots of three _Echinacea purpurea_ (_E. purpurea_) species using square wave voltammetry (SWV). Individual polyphenol components were identified, and then quantified by ultra‐high performance liquid chromatography coupled with mass spectrometery (UPLC‐MS). Two major polyphenols, chicoric (ChA) and caftaric ...
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Electrochemical oxidation of chicoric acid (ChA) was investigated using cyclic voltammetry and chronoamperometry at a glassy carbon electrode. Chicoric acid generates single quasi‐reversible redox wave in cyclic voltammetry over a wide pH range, and an ECEC‐dimerization mechanism is proposed. Effect of glutathione (GSH) on the electrochemical oxidation of chicoric acid (ChA) was investigated in Britton−Robinson buffer solution. Ultra‐high performance liquid ...
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The main objective of this research was to develop a simple and sensitive electrochemical method for determination of trace-level of luteolin using vulcan carbon black (VCB) modified glassy carbon electrode (GCE). Compared with the bare GCE, the VCB/GCE exhibits higher electrocatalytic ability toward luteolin oxidation. This is due to the large surface-to-volume ratio of the carbon black together with the ...
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إختر الإجابة الصحيحة: يحسب القرم الهيدروجينى (PH) عند بداية التفاعل فى معايرة حمض قوى بقاعدة قوية بالمعالدة التالية: (A) pH = -log[H+] (B) [H+] = NaVa – NbVb / (Va+Vb) (C) pOH = -log[OH-] (D) [OH-] = NbVb – NaVa / (Va+Vb)
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CHOOSE THE CORRECT ANSWER: IN STRONG ACID – STRONG BASE TITRATION, THE PH OF MIXTURE AT INITIAL STAGE IS FIND OUT BY FORMULA……............ (A) pH = -log[H+] (B) [H+] = NaVa – NbVb / (Va+Vb) (C) pOH = -log[OH-] (D) [OH-] = NbVb – NaVa / (Va+Vb)
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الرجاء حل التمرين المرفق وتسليمه خلال المحاضره التالية أو إرساله على البريد الإلكترونى التالى: emad.newair@science.sohag.edu.eg
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الرجاء حل هذا التمرين وتسليمه خلال المحاضره القادمه ورقياً أو إرساله على البريد الإلكترونى التالى: emad.newair@science.sohag.edu.eg
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