RT info:eu-repo/semantics/article
T1 Development of a selective chloride sensing platform using a screen-printed platinum electrode
A1 Cunha Silva, Hugo
A1 Arcos Martínez, Julia
K1 Chloride
K1 Platinum electrode surface
K1 Cathodic stripping voltammetry
K1 Screen-printed electrode
K1 Flexible sensor
K1 Química analítica
K1 Chemistry, Analytic
AB 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.
PB Elsevier
SN 0039-9140
YR 2019
FD 2019-04
LK http://hdl.handle.net/10259/5347
UL http://hdl.handle.net/10259/5347
LA eng
NO Spanish Ministry of Science and Innovation (MICINN), Ministry of Economy and Competitiveness (MINECO) and the European Regional Development Fund (FEDER) (TEC20013-40561-P and MUSSEL RTC-2015-4077-2). Hugo Cunha-Silva would like to acknowledge funding from the Spanish Ministry of Economy (BES-2014-068214).
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024