2026-04-29T03:13:58Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/49982021-11-10T09:38:19Zcom_10259_5377com_10259_5086com_10259_2604com_10259_4313col_10259_5378col_10259_4314

Pascual Portal, Blanca Sol 418 500 Vallejos Calzada, Saúl 567 500 Reglero Ruiz, José A. 468 500 Bertolín Burillo, Juan Carlos 62 500 Represa Pérez, César 471 500 0000-0001-6440-7748 García García, Félix Clemente 201 500 García Pérez, José Miguel 213 500 2018-11-08T08:56:24Z 2019-02 2021-02-15 0304-3894 http://hdl.handle.net/10259/4998 10.1016/j.jhazmat.2018.10.039 Conventional nonconductive vinylic films with dispersed aniline change their color and become conductive in the presence of specific oxidant gases, namely, chlorine and hydrogen peroxide. The color change arises from the polymerization of the aniline to yield the conjugated polymer polyaniline, which at the same time renders the flexible vinylic films conductive. We present a simple and straightforward method using both colorimetric and electrical responses to detect and quantify the presence of oxidants (Cl2 and H2O2) in the air. Using RGB analysis (red, green and blue parameters defining the colors in digital pictures on a computer display) based on different pictures taken with a smartphone of discs extracted from the films and by measuring the UV–vis spectral variation in the presence of different concentrations of Cl2 and H2O2, we obtained limits of detection and quantification between 15 and 200 ppbv for H2O2 and between 37 and 583 ppbv for Cl2. Additionally, the electrical response was measured using a fabricated device to visually detect the electrical conductivity activation of the sensor in the presence of oxidant atmospheres, detecting a rapid decrease in resistivity (three orders of magnitude) when the polymerization of aniline began, changing the film from non-conductive to conductive. FEDER (Fondo Europeo de Desarrollo Regional) and the Spanish Agencia Estatal de Investigación (AEI) (MAT2017-84501-R) application/pdf eng Elsevier Journal of Hazardous Materials. 2019, V. 364, p. 238-243 https://doi.org/10.1016/j.jhazmat.2018.10.039 info:eu-repo/grantAgreement/MICINN/MAT2017-84501-R Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Vinylic films Detection of oxidant atmospheres Visual detection Resistivity sensors Conductive polymers Química orgánica Chemistry, Organic Easy and inexpensive method for the visual and electronic detection of oxidants in air by using vinylic films with embedded aniline info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/4998/8/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 8 THUMBNAIL Pascual-jhm_2019.pdf.jpg Pascual-jhm_2019.pdf.jpg IM Thumbnail image/jpeg 3593 https://riubu.ubu.es/bitstream/10259/4998/7/Pascual-jhm_2019.pdf.jpg 615146025783ad44c8e154b69acdfbf2 MD5 7 ORIGINAL Pascual-jhm_2019.pdf Pascual-jhm_2019.pdf application/pdf 606618 https://riubu.ubu.es/bitstream/10259/4998/1/Pascual-jhm_2019.pdf 4e90914959c5eb8088fcd6548091ad45 MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/4998/5/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 5 TEXT Pascual-jhm_2019.pdf.txt Pascual-jhm_2019.pdf.txt Extracted text text/plain 35554 https://riubu.ubu.es/bitstream/10259/4998/6/Pascual-jhm_2019.pdf.txt d2016d6b36c5c2c1121aac8246ca4de7 MD5 6 10259/4998 oai:riubu.ubu.es:10259/4998 2021-11-10 10:38:19.132 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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