2024-03-29T12:13:58Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/53472022-04-08T10:31:37Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377
Cunha Silva, Hugo
Arcos Martínez, Julia
2019-04
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.
application/pdf
http://hdl.handle.net/10259/5347
eng
Elsevier
Development of a selective chloride sensing platform using a screen-printed platinum electrode
info:eu-repo/semantics/article
TEXT
RIUBU. Repositorio Institucional de la Universidad de Burgos
Hispana