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Direct detection of ammonium ion by means of oxygen electrocatalysis at a copper-polyaniline composite on a screen-printed electrode.
Linköping University, Faculty of Science & Engineering. Linköping University, Department of Physics, Chemistry and Biology. Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv, 03680, Ukraine .
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Department of Physics, Chemistry and Biology. Linköping University, Faculty of Science & Engineering.
ACREO Swedish ICT, -601 74, Norrköping, SE, Sweden .ORCID iD: 0000-0001-6889-0351
Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry. Linköping University, Faculty of Science & Engineering.
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2016 (English)In: Microchimica Acta, ISSN 0026-3672, E-ISSN 1436-5073, Vol. 183, no 6, 1981-1987 p.Article in journal (Refereed) Published
Abstract [en]

A novel electrocatalytic material for oxygen reduction, based on polyaniline in combinationwith copper, was developed and utilised for the direct voltammetric quantification of ammonium ions. Consecutive electrode modification by electrodeposited copper, a Nafion membrane and electropolymerised polyaniline resulted in an electrocatalytic composite material which the retained conductivity at neutral pH. Ammonia complex formation with Cu (I) caused the appearance of oxygen electrocatalysis, which was observed as an increase in cathodic current. This Faradaic phenomenon offered the advantage of direct voltammetric detection and was utilised for ammonium electroanalysis. The developed quantification protocol was applied for ammonium assay in human serum and compared with the routine approach for clinical analysis.

Place, publisher, year, edition, pages
2016. Vol. 183, no 6, 1981-1987 p.
Keyword [en]
Conductive polymer, Nanocomposite, Amperometry, Electrochemical impedance spectroscopy, SEM, EDX, XPS, Serum analysis
National Category
Other Basic Medicine
Identifiers
URN: urn:nbn:se:liu:diva-128192DOI: 10.1007/s00604-016-1834-3ISI: 000376600300021OAI: oai:DiVA.org:liu-128192DiVA: diva2:929986
Funder
EU, FP7, Seventh Framework Programme, PIRSES
Available from: 2016-05-20 Created: 2016-05-20 Last updated: 2016-06-21

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Zhybak, Mykhailo T.Vagin, Mikhail Yu.Beni, ValerioLiu, XianjieTurner, Anthony P. F.
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Faculty of Science & EngineeringDepartment of Physics, Chemistry and BiologyPhysics and ElectronicsSurface Physics and ChemistryBiosensors and Bioelectronics
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