2026-04-29T09:59:58Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/53472022-04-08T10:31:37Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377
Development of a selective chloride sensing platform using a screen-printed platinum electrode
Cunha Silva, Hugo
Arcos Martínez, Julia
Chloride
Platinum electrode surface
Cathodic stripping voltammetry
Screen-printed electrode
Flexible sensor
A new and selective voltammetric method for chloride determination is proposed, based on platinum and chloride interactions. A screen-printed platinum electrode (SPPtE) functions as a sensing platform, which promotes the formation of chloro-adsorbed species on the electrode surface, acting as an effective means of anion-determination in several matrices. The pretreatment of the SPPtE and careful control of the cathodic stripping voltammetric parameters yielded a well-defined electrochemical signal. This cathodic peak was due to the adsorption of chlorine, which had previously been oxidized from chloride anions in the initial anodic deposition step. It offers a simple, low-cost, fast, reproducible (RSD < 6%) and precise method for selective chloride determination, with limit of detection of 0.76 mM, and a sensitivity of − 24.147 µA mM −1 for a broad determination range of up to 150 mM. Chloride determination was correctly performed with single drops of environmental, pharmaceutical and food samples. In addition, the sensor was successfully adapted as a flexible screen-printed platinum electrode sensor using Gore-Tex® as support for printing.
2020-06-18T08:19:40Z
2020-06-18T08:19:40Z
2020-06-18T08:19:40Z
2019-04
info:eu-repo/semantics/article
0039-9140
http://hdl.handle.net/10259/5347
10.1016/j.talanta.2018.12.008
eng
Talanta. 2019, V. 195, p. 771-777
https://doi.org/10.1016/j.talanta.2018.12.008
info:eu-repo/grantAgreement/MICINN/TEC20013-40561-P
info:eu-repo/grantAgreement/MINECO/MUSSEL RTC-2015-4077-2
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Elsevier