نتایج جستجو برای: square wave voltammetry

تعداد نتایج: 347759  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده علوم 1393

در این کار به منظور اندازه گیری هورمون رشد در نمونه های سرم خون انسان و نمونه های دارویی توسط یک الکترود پلاتین و تبدیل آن به یک حسگر سطح الکترود پلاتین توسط روش الکتروپلیمریزاسیون اصلاح گردید لایه اصلاح گر ایجاد شده روی سطح الکترود مذکور خاصیت الکتروشیمیایی و حساسیت آن را نسبت به هورمون رشد انسانی به مراتب افزایش داد و در نتیجه این الکترود از زمان پاسخ دهی کوتاه حد تشخیص پایین دقت و گزینش پذیر...

In this study, simple, fast and reliable cyclic voltammetry (CV), linear sweep voltammetry (LSV), square wave voltammetry (SWV) and differential pulse voltammetry (DPV) methods were developed and validated for determination of bosentan in pharmaceutical preparations. The proposed methods were based on electrochemical oxidation of bosentan at platinum electrode in acetonitrile solution containin...

In this study, yttrium aluminum garnet (YAG) was prepared using a facile electrochemical technique. Four samples were synthesized in 0, 20, 40 and 60°C by electrochemical pulse deposition and were then calcined at 1200°C. The effect of synthesis temperature on morphology and structure of YAG was studied using X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron micro...

2012
Adriana Remes Aniela Pop Florica Manea Anamaria Baciu Stephen J. Picken Joop Schoonman

The aim of this study was the preparation, characterization, and application of a multi-wall carbon nanotubes-epoxy composite electrode (MWCNT-EP) with 25%, wt. MWCNTs loading for the voltammetric/amperometric determination of pentachlorophenol (PCP) in aqueous solutions. The structural and morphological aspects of the MWCNT-EP composite electrode were examined by scanning electron microscopy. ...

Journal: :Bioelectrochemistry 2010
Afzal Shah Victor C Diculescu Rumana Qureshi Ana Maria Oliveira-Brett

Camptothecin (CPT) is a cytotoxic quinoline alkaloid endowed with the inhibition of topoisomerase I, an essential enzyme for the normal functioning of DNA. The redox behaviour of CPT was investigated at a glassy carbon electrode using cyclic, differential pulse and square wave voltammetry. It was shown that CPT can undergo reduction in a pH-dependent mechanism. In acid media only one irreversib...

A chemically modified carbon paste electrode with 2-chlorobenzoyl ferrocene (2CBF) and carbon nanotube (2CBFCNPE) was employed to study the electrocatalytic oxidation of ascorbic acid in aqueous solution using cyclic voltammetry, square wave voltammetry and chronoamperometry. The diffusion coefficient (D = 1.42 × 10-6 cm2 s-1), and the kinetic parameter such as ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید