Please use this identifier to cite or link to this item: http://ir.swu.ac.th/jspui/handle/123456789/12280
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dc.contributor.authorPungjunun K.
dc.contributor.authorChaiyo S.
dc.contributor.authorPraphairaksit N.
dc.contributor.authorSiangproh W.
dc.contributor.authorOrtner A.
dc.contributor.authorKalcher K.
dc.contributor.authorChailapakul O.
dc.contributor.authorMehmeti E.
dc.date.accessioned2021-04-05T03:02:31Z-
dc.date.available2021-04-05T03:02:31Z-
dc.date.issued2019
dc.identifier.issn9565663
dc.identifier.other2-s2.0-85071253179
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85071253179&doi=10.1016%2fj.bios.2019.111606&partnerID=40&md5=2d2dabc1477f52c7ee31cbb45fad7615
dc.identifier.urihttp://ir.swu.ac.th/jspui/handle/123456789/12280-
dc.description.abstractA disposable gas-sensing paper-based device (gPAD) was fabricated in origami design which integrates the gas adsorbent and the electrochemical detection zone in a single device. The gPAD for the determination of NOx gas uses a screen-printed graphene electrode modified with copper nanoparticles (CuNP/SPGE) to achieve high sensitivity and selectivity. The gPAD detects both, NO and NO2 (as NOx) with same current responses. The measurement could be performed directly through differential pulse voltammetry (DPV) with a detection limit as low as 0.23 vppm and 0.03 vppm with exposure times of 25 min and 1 h, respectively. The reproducibility in terms of relative standard deviation was less than 5.1% (n = 7 devices) at 25, 75 and 125 vppm NO2 and the life-time of this device was more than 30 days. The gPAD was applied to detect NOx in air and exhaust gases from cars. In comparison with spectrophotometry, there are no significant differences between both methods using a paired t-test of the results on a 95% confidence level. The designed gPAD can provide a new template model for other gas sensors with features of disposability and portability for fieldwork analysis at low cost. © 2019 Elsevier B.V.
dc.subjectAnalytic equipment
dc.subjectChemical detection
dc.subjectChemical sensors
dc.subjectCopper
dc.subjectExhaust gases
dc.subjectGas adsorption
dc.subjectGas detectors
dc.subjectGraphene
dc.subjectGraphene devices
dc.subjectGraphite electrodes
dc.subjectMetal nanoparticles
dc.subjectNitric oxide
dc.subjectNitrogen oxides
dc.subjectVoltammetry
dc.subjectCopper nanoparticles
dc.subjectDifferential pulse voltammetry
dc.subjectELectrochemical detection
dc.subjectGas sensing
dc.subjectNitrogen dioxides
dc.subjectPaper-based analytical devices
dc.subjectRelative standard deviations
dc.subjectScreen-printed graphene electrodes
dc.subjectGas sensing electrodes
dc.subjectcopper nanoparticle
dc.subjectnitrogen oxide
dc.subjectcopper
dc.subjectgraphite
dc.subjectmetal nanoparticle
dc.subjectnitric oxide
dc.subjectnitrogen dioxide
dc.subjectanalytic method
dc.subjectArticle
dc.subjectcomparative study
dc.subjectcost control
dc.subjectdifferential pulse voltammetry
dc.subjectelectrochemical detection
dc.subjectexhaust gas
dc.subjectlimit of detection
dc.subjectreproducibility
dc.subjectspectrophotometry
dc.subjectchemistry
dc.subjectelectrochemical analysis
dc.subjectgenetic procedures
dc.subjecthuman
dc.subjectisolation and purification
dc.subjectpaper
dc.subjectBiosensing Techniques
dc.subjectCopper
dc.subjectElectrochemical Techniques
dc.subjectGraphite
dc.subjectHumans
dc.subjectMetal Nanoparticles
dc.subjectNitric Oxide
dc.subjectNitrogen Dioxide
dc.subjectPaper
dc.titleElectrochemical detection of NOx gas based on disposable paper-based analytical device using a copper nanoparticles-modified screen-printed graphene electrode
dc.typeArticle
dc.rights.holderScopus
dc.identifier.bibliograpycitationBiosensors and Bioelectronics. Vol 143, No. (2019)
dc.identifier.doi10.1016/j.bios.2019.111606
Appears in Collections:Scopus 1983-2021

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