نتایج جستجو برای: analytical electrochemistry

تعداد نتایج: 172835  

2007

the actual process is much more complex. Let us imagine that you can sit as an observer on the electrode surface and look out into the solution. What you would see, ignoring for the moment the composition of the electrode surface except to say that it is electrically conductive, is solvent molecules. If the solvent is water, its molecules will appear to be moving in and out, but most will seem ...

Journal: :Journal of agricultural and food chemistry 2008
Grégoire Herzog Victor Kam Alfonso Berduque Damien W M Arrigan

Electrochemistry at the liquid-liquid interface enables the detection of nonredoxactive species with electroanalytical techniques. In this work, the electrochemical behavior of two food additives, aspartame and acesulfame K, was investigated. Both ions were found to undergo ion-transfer voltammetry at the liquid-liquid interface. Differential pulse voltammetry was used for the preparation of ca...

2009
Sang Kwon Lee Mark M. Richter Lucjan Strekowski Allen J. Bard

Analytical Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Electrogenerated Chemiluminescence. 61. Near-IR Electrogenerated Chemiluminescence, Electrochemistry, and Spectroscopic Properties of a Heptamethine Cyanine Dye in MeCN Sang Kwon Lee, Mark M. Richter, Lucjan Strekowski, and Allen J. Bard Anal. Chem., 1997, 69 (20), 4126-4...

Journal: :analytical and bioanalytical chemistry research 2014
jahan bakhsh raoof abolfazl kiani reza ojani roudabeh valiollahi

the electrochemistry of banana tissues on a carbon paste electrode modified with multi-walled carbon nanotubes (mwcnts) is presented. cyclic voltammetry is applied to investigate the direct electrochemistry of banana tissues i.e. a source of polyphenol oxidase (ppo). a redox couple with an anodic and counterpart cathodic peak is obtained. the influence of various parameters such as ph, scan rat...

2017
Bernhard Gollas

Advances in Electrochemistry! This Virtual Issue on Advances in Electrochemistry highlights the rich diversity in the exciting and dynamic field of electrochemistry.

Journal: :Lab on a chip 2013
Karen Scida Eoin Sheridan Richard M Crooks

A method for controlling enrichment, separation, and delivery of analytes into different secondary microchannels using simple microfluidic architecture is described. The approach, which is based on bipolar electrochemistry, requires only easily fabricated electrodes and a low-voltage DC power supply: no pumps or valves are necessary. Upon application of a voltage between two driving electrodes,...

Journal: :Chemical record 2012
James F Rusling

For this special issue on 90 years of polarography, the following personal account describes how my early research in electrochemistry and polarography in the laboratory of Prof. Petr Zuman led to a major research effort in the determination of proteins for cancer detection and monitoring. It reviews the very recent history of nanoparticle labels and multiplexed detection in protein immunosenso...

2016
Rafaela Vasiliadou Mohammad Mehdi Nasr Esfahani Nathan J. Brown Kevin J. Welham

Human metabolism is investigated using several in vitro methods. However, the current methodologies are often expensive, tedious and complicated. Over the last decade, the combination of electrochemistry (EC) with mass spectrometry (MS) has a simpler and a cheaper alternative to mimic the human metabolism. This paper describes the development of a disposable microfluidic device with a screen-pr...

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