NDLI: Sensitive determination of ATP using a carbon paste electrode modified with a carboxyl functionalized ionic liquid

Content Provider	Springer Nature Link
Author	Gao, Hongwei Xi, Mengying Xu, Li Sun, Wei
Copyright Year	2011
Abstract	We report on a new electrode for the determination of adenosine-5′-triphosphate (ATP). It is based on modified carbon paste electrode that contains an ionic liquid (IL) as the binder. The electrode shows strong electrocatalytic oxidative activity towards ATP at pH 4.5 in giving a well-defined single oxidation peak. The oxidation reaction is adsorption-controlled and due to the presence of the highly conductive IL. The electron transfer rate constant was calculated to be 2.04×10–3 s–1, and the surface coverage is 1.11×10–10 mol cm–2. Under the selected conditions, the oxidation peak current changes linearly with the concentration of ATP in the range from 5.0 to 1000 μmol L−1 and a detection limit of 1.67 μmol L−1 (3 σ) as determined by differential pulse voltammetry. The method displays good selectivity and was applied to the determination of ATP injection samples with satisfactory results. Figa An ionic liquid 1-carboxyl-methyl-3-methylimidazolium hexafluorophosphate modified carbon paste electrode was fabricated and used for the sensitive detection adenosine-5’-triphosphate (ATP). The electrochemical oxidation of ATP was greatly enhanced due to the presence of IL in the carbon paste and the electrochemical parameter was calculated.
Starting Page	115
Ending Page	122
Page Count	8
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	174
Issue Number	1-2
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2011-04-14
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ionic liquid Carbon paste electrode Adenosine-5′-triphosphate Cyclic voltammetry 1-carboxyl-methyl-3-methylimidazolium hexafluorophosphate Microengineering Analytical Chemistry Nanochemistry Nanotechnology Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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