Caffeine determination at a carbon fiber ultramicroelectrodes by fast-scan cyclic voltammetry

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Background-subtraction of fast-scan cyclic staircase voltammetry at protein-modified carbon-fiber electrodes.

Background-subtraction techniques were applied to the voltammetry of nicotinamide adenine dinucleotide (NADH) at protein-modified carbon-fiber microelectrodes. The background currents at carbon-fiber electrodes were stable and voltammetric scans immediately before or after the analyte were effectively used for background subtraction. Digital step-potential waveforms were used to excite these ca...

متن کامل

Selective Determination of Methylmercury by Flow-Injection Fast-Scan Voltammetry

A simple flow-injection system, suitable for solution flow rates at microliters-per-minute, has been combined with fast-scan voltammetry for selective determination of methylmercury. A thin Hg film was formed at a Pt microelectrode prior to the measurement. Detection of methylmercury is carried out by measuring the oxidation of methylmercury radicals that have been generated at the Hg microelec...

متن کامل

Characterization of local pH changes in brain using fast-scan cyclic voltammetry with carbon microelectrodes.

Transient local pH changes in the brain are important markers of neural activity that can be used to follow metabolic processes that underlie the biological basis of behavior, learning and memory. There are few methods that can measure pH fluctuations with sufficient time resolution in freely moving animals. Previously, fast-scan cyclic voltammetry at carbon-fiber microelectrodes was used for t...

متن کامل

Fast-Scan Cyclic Voltammetry Allows Determination of Electron- Transfer Kinetic Constants in Single Nanoparticle Collision

Here we report the use of Fast-Scan Cyclic Voltammetry (FSCV) to study transient nanoparticle (NP) collision experiments and determine the apparent heterogeneous electron-transfer (ET) rate constant k and electrocatalytic activity of single NPs. Continuous potential scanning at fast scan rates, for example, up to 500 V/s, and background subtraction enable voltammetric study of single NPs when t...

متن کامل

Hitchhiker's Guide to Voltammetry: Acute and Chronic Electrodes for in Vivo Fast-Scan Cyclic Voltammetry

Fast-scan cyclic voltammetry (FSCV) has been used for over 20 years to study rapid neurotransmission in awake and behaving animals. These experiments were first carried out with carbon-fiber microelectrodes (CFMs) encased in borosilicate glass, which can be inserted into the brain through micromanipulators and guide cannulas. More recently, chronically implantable CFMs constructed with small di...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of the Brazilian Chemical Society

سال: 2012

ISSN: 0103-5053

DOI: 10.1590/s0103-50532012000400012