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Homocysteine Electrochemistry at a Mercury Electrode
reaction of mercury thiolate (with a NiH-dependent peak potential); B and C) catalytic. Ni2+ reduction peaks; E) catalytic hydrogen evolution; G) Hey-assisted anodic reaction ... hyperhomocysteinernia has been suggested as a new, independent risk ... presence of Hcy and Ni2+ at a hanging mercury drop electrode (HMDE) ...
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Estimation of Thiol Compounds Cysteine and Homocysteine in
Aug 20, 2013 ... amount of electrons for the electrode reaction. Electrochemical .... In presence of L-cysteine, the NBA anode peak current increases very steeply. ... reaction represents a new approach to the detection of thiol compounds. ... electrocatalytic activity of cysteine oxidation than other comparable electrodes.
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Full text (PDF)
(EVLS) (ref.3–5) in connection with a mercury electrode, sig- nals of (E) and (Z) forms ... In 2000, a new type of electrode, the bismuth film elec- trode (BiFE) was  ...
[ 2009_s2_s257-s283.pdf - Read/Download File

Analytical determination of homocysteine: a review
The presence of protein-bound homocysteine has made it difficult to develop a ... These folates are vital in humans for several metabolic reactions involved in the ... methodologies have been refined and new processes have been developed. ..... with the catalytic oxidation of thiols on a gold/mercury-amalgamated electrode  ...
[ 1-s2.0-S0039914003001735-main.pdf?_tid=2b03386c-1f55-11e4-84b8-00000aab0f27&acdnat=1407541318_ed2f374dae47f0f17907900b230581d8 - Read/Download File

A Thesis entitled Detection of Thiols by o-Quinone Electrocatalytic
In this thesis, new immobilization membranes, co-electrocatalysts and ... exhibits a reversible 2-electron, 2-proton oxidation and reduction reaction. ... resulting from oxidation of PQQH2 back to PQQ at a glassy carbon electrode surface. ..... Homocysteine can be converted to cysteine in presence of B-vitamins.12.
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English (pdf) - SciELO
Nov 13, 2009 ... The surface of glassy carbon (GC) electrode has been modified by ... functionalized electrode exhibited electrocatalytic responses ... reaction occurs by the oxidation reaction mechanism on electrodes .... similar behaviour has been demonstrated using mercury ... But, the development of a new electro-.
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Annual Report 2008 - NTNU
Nov 24, 2008 ... I. and Vytřas, K. New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions.
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Graphene quantum dot functionalized by beta-cyclodextrin - Taylor
May 1, 2016 ... ified electrodes with electrocatalytic properties have been ... new class of carbon nanomaterials have been exploited for ..... Figure 3 (A) CVs of β-CD/GQDs/GCE in the presence of 2 mM Cys + 0.1 M PBS (pH ... by electrochemical reaction and followed by a homogenous ..... and detection of mercury(II) ions.
[ 20550324.2016.1187428 - Read/Download File

Direct electrochemistry and electrocatalysis of myoglobin
Jul 6, 2004 ... The electrode reaction showed a surface-controlled process with one ... using mercury electrodes [1], methyl-viologen-modified ... new Mb-modified electrode with well-behaved electro- ... the presence of alumina, which is a disadvantage during .... Mb/homocysteine/Au electrode [34] due to the very large.
[ 148 AB Dai ZH.pdf - Read/Download File

Full-Text PDF -
Oct 22, 2014 ... the electrode and the analyte-specific enzyme to obtain a defined signal and to ... One challenging issue in manufacturing a new generation of ... catalytic mode by generating a steady current in the presence of an electron donor like lactose. ... groups of the MWCNTs reacted by an amidation reaction with ...
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Electrocatalysis via Direct Electrochemistry of Myoglobin
reactions play essential roles in biological process. The ... publications such as early on dropping mercury electrodes. [1, 2] and later by using methyl ... develop a new Mb modified electrode with well-behaved .... The presence of colloidal gold resulted in .... immobilized on a DL-homocysteine self-assembled gold electrode ...
[ 117 EA Liu SQ.pdf - Read/Download File

Carbon paste electrodes in the new millennium - De Gruyter
i.e., polarography with the dropping mercury electrode .... favourable reaction kinetics due to electrocatalysis have ... amino acids (homocysteine [69]), flavonoid-antioxidants .... given by the presence of both CNTs and RTILs may offer yet some ...
[ $002fj$002fchem.2009.7.issue-4$002fs11532-009-0097-9$002fs11532-009-0097-9.pdf?t:ac=j$002fchem.2009.7.issue-4$002fs11532-009-0097-9$002fs11532-009-0097-9.xml - Read/Download File

Boron-doped diamond electrode: synthesis, characterization
Aug 7, 2009 ... Mercury electrodes can circumvent this problem but they ... the hydrogen evolution reaction but such electrodes are more vulnerable to surface ...
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Modified Carbon Nanotube Paste Electrode for Voltammetric
Jan 23, 2012 ... (CNTs) represent a new and interesting alternative for ... of promoting electron transfer reactions and improving sensitivity in ... homocysteine [32]. Deficiency of FA is a ... for the electrocatalytic determination of CD in aqueous solutions. ... modified electrode for quantification of CD in the presence of FA and ...
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Preparation of a 2-(4-fluorophenyl) indole-modified xerogel and its
the fabrication of screen-printed electrodes for the electrocatalytic determination ... several toxic metals (e.g. mercury, lead) discharged into the ... Sol–gel-derived glasses have emerged as a new class .... KCl, pH 4.5–8.5 were introduced in the reaction cell and ... Pt-FPIX, the same procedure, in the presence of 10 mg plat-.
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Electrochemical Study of Thiols and Disulfides Using Modified
University of New Orleans. New Orleans, La. 70148 ... properties due to the electrocatalytic capability of the electrode. Using ... the presence of acetylcysteine and homocysteine. The object of ... conducted using a Tacussel PRT 20 potentiostat with a mercury film in a compartment H ... much faster reaction: Ep- Ep12 = 50 mV.
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ُراوش يلاس
Sol-gel electrode modified with carbon nanotubes as a novel sensor for the voltammetric ... Development of a new electrochemical aptasensor for Sensing of epirubicin. یشقاب ِوئا. 17:25 ... electrocatalyst for hydrogen evolution reaction. داصساگذًاه ٌِیکػ ..... aptamers for determination of homocysteine in biological samples.
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Download as PDF - InTech
Jul 27, 2011 ... New Perspectives in Biosensors Technology and Applications ... quartz crystal piezoelectrode corroborate the observed RELS and ... toxic heavy metals (Hg, Cd , Pb). ... expression is due to the stoichiometry of the redox reactions in ... Therefore, in presence of homocysteine, ZONYL is replaced in a ligand.
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An introduction to thiol redox proteins in the endoplasmic reticulum
Oct 23, 2014 ... catalysts of redox reactions, because of their flexibility, and ... the medical point of view the level of total homocysteine in ... levels using a hanging mercury drop electrode, Ag/AgCl .... the catalytic oxidation of mercury in the presence of thiols. .... used with a new integrated pulse amperometric detection.
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Electrochemical Behavior of Folic Acid at A Boron-Doped Diamond
Key words: Folic acid, Boron-doped diamond electrode, Cyclic voltammetry, Square-wave adsorptive .... studi d at frst on mercury electrodes (17- ... as a new and excellent carbon electrode .... of the FA electrooxidation reaction. ..... in the presence of strong acidic environment .... reduction of fasting total homocysteine levels.
[ 1112014 (1) 87-100.pdf - Read/Download File

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