caa a22 4500 445881453 CHVBK 20180317145544.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00604-011-0588-1 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0588-1 Sensitive determination of ATP using a carbon paste electrode modified with a carboxyl functionalized ionic liquid [Elektronische Daten] [Hongwei Gao, Mengying Xi, Li Xu, Wei Sun] 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 1000μmol L−1 and a detection limit of 1.67μmol L−1 (3σ) 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. Springer-Verlag, 2011 Ionic liquid nationallicence Carbon paste electrode nationallicence Adenosine-5′-triphosphate nationallicence Cyclic voltammetry nationallicence 1-carboxyl-methyl-3-methylimidazolium hexafluorophosphate nationallicence Gao Hongwei Shandong Entry-Exit Inspection and Quarantine Bureau of People's Republic of China, 266002, Qingdao, People's Republic of China aut Xi Mengying College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic China aut Xu Li College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic China aut Sun Wei College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic China aut Microchimica Acta Springer Vienna 174/1-2(2011-07-01), 115-122 0026-3672 174:1-2<115 2011 174 604 https://doi.org/10.1007/s00604-011-0588-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0588-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gao Hongwei Shandong Entry-Exit Inspection and Quarantine Bureau of People's Republic of China, 266002, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Xi Mengying College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic China aut NATIONALLICENCE 700 1- Xu Li College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic China aut NATIONALLICENCE 700 1- Sun Wei College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 174/1-2(2011-07-01), 115-122 0026-3672 174:1-2<115 2011 174 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer