نتایج جستجو برای: amperometric sensor

تعداد نتایج: 190679  

2017

Submit Manuscript | http://medcraveonline.com immense number of publications appeared dealing mainly with the determination of the four “classical” metals easily accessible by inverse voltammetry on mercury electrodes, i.e., Zn, Cd, Pb and Cu. Along with such prosperity in voltammetry also potentiometry slipped into its golden age with the development of new ion selective membranes for many of ...

2006
Jian Wu Qingli Zhou Jun Liu Zhengguo Lou

In this paper, a novel nano aqueous flow sensor which consists of two closely spaced amperometric sensors is investigated by digital simulation. The simulation results indicate that the ratio of the responses of two closely spaced amperometric sensors is only related to flow rates in the channel, insensitive to the analyte concentration in the solution. By comparing the output of two amperometr...

Journal: :Journal of the Surface Finishing Society of Japan 1998

2012
Robert A. Croce Santhisagar Vaddiraju Fotios Papadimitrakopoulos Faquir C. Jain

The performance of implantable electrochemical glucose sensors is highly dependent on the flux-limiting (glucose, H(2)O(2), O(2)) properties of their outer membranes. A careful understanding of the diffusion profiles of the participating species throughout the sensor architecture (enzyme and membrane layer) plays a crucial role in designing a robust sensor for both in vitro and in vivo operatio...

2007
C. Lotti M. Mugnaini S. Rocchi L.Tondi V.Vignoli

In this work a new and simple two electrode amperometric sensor for NO2 detection is described. The sensor consists of a Nafion® proton exchange membrane (PEM), a Graphite working electrode, and a NiO counter electrode. The developed sensor presents a good sensitivity to NO2 and very small cross sensitivity to CO and O2. A dedicated measurement system was developed, and a measurement protocol w...

2016
Selvakumar Palanisamy Balamurugan Thirumalraj Shen-Ming Chen Yi-Ting Wang Vijayalakshmi Velusamy Sayee Kannan Ramaraj

We report a novel and sensitive amperometric sensor for chlorpromazine (CPZ) based on reduced graphene oxide (RGO) and polydopamine (PDA) composite modified glassy carbon electrode. The RGO@PDA composite was prepared by electrochemical reduction of graphene oxide (GO) with PDA. The RGO@PDA composite modified electrode shows an excellent electro-oxidation behavior to CPZ when compared with other...

Journal: :Biosensors & bioelectronics 2013
Cheng Xue Qing Han Yang Wang Jinhua Wu Tingting Wen Ruoyu Wang Junli Hong Xuemin Zhou Huijun Jiang

In this work, a highly sensitive and selective biomimetic electrochemical sensor for the amperometric detection of trace dopamine (DA) in human serums was achieved by gold nanoparticles (AuNPs) doped molecularly imprinted polymers (MIPs). Functionalized AuNPs (F-AuNPs), a novel functional monomer bearing aniline moieties on the surface of the AuNPs, were prepared via a direct synthesis method a...

2012
Zdenka Bartosova Daniel Riman Petr Jakubec Vladimir Halouzka Jan Hrbac David Jirovsky

The paper focuses on the analysis and detection of electroactive compounds using high-performance liquid chromatography (HPLC) combined with electrochemical detection (EC). The fabrication and utilization of electrochemically treated carbon fiber microelectrodes (CFMs) as highly sensitive amperometric detectors in HPLC are described. The applied pretreatment procedure is beneficial for analytic...

Journal: :Analytical and Bioanalytical Chemistry 2009
John Benedet Donglai Lu Karel Cizek Jeff La Belle Joseph Wang

Rapid detection of the hydrogen peroxide precursor of peroxide explosives is required in numerous security screening applications. We describe a highly sensitive and selective amperometric detection of hydrogen peroxide vapor at an agarose-coated Prussian-blue (PB) modified thick-film carbon transducer. The sensor responds rapidly and reversibly to dynamic changes in the level of the peroxide v...

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