2026-04-13T02:18:31Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1255672025-12-04T19:36:15Zcom_2072_1057col_2072_478813col_2072_478917

urn:hdl:2445/125567 Determination of Pd(II) using an antimony film coated on a screen-printed electrode by adsorptive stripping voltammetry Pérez Ràfols, Clara Trechera, Pedro Serrano i Plana, Núria Díaz Cruz, José Manuel Ariño Blasco, Cristina Esteban i Cortada, Miquel Pal·ladi (Element químic) Voltametria Palladium Voltammetry The use of an antimony film coated on a screen-printed carbon electrode (ex-situ SbSPCE) is proposed for the determination of Pd(II) at ppb levels in natural samples by adsorptive stripping voltammetry using dimethylglyoxime as chelating agent. Ex-situ SbSPCE produces a better analytical performance as compared to a commercially sputtered bismuth screen-printed electrode (BispSPE). The detection and quantification limits were 2.7 and 9.0 µg L-1 respectively with a good linear behaviour in the wide examined concentration range (from 1 µg L-1 up to 100.0 µg L1, R2= 0.998). The proposed ex-situ SbSPCE showed an excellent repeatability with a relative standard deviation of 0.5 % for ten successive measurements and a very good reproducibility (1.6 % for three different ex-situ SbSPCE units within series of ten repetitive assays). Moreover, the ex-situ SbSPCE was successfully applied for the determination of low concentration levels of Pd(II) in spiked tap water with a very high reproducibility (0.2 %) and providing equivalent results to those achieved by ICP-MS measurements 2018-10-24T08:26:31Z 2019-02-04T06:10:25Z 2017-02-04 2018-10-24T08:26:33Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Versió postprint del document publicat a: https://doi.org/10.1016/j.talanta.2017.01.084 Talanta, 2017, vol. 167, p. 1-7 https://doi.org/10.1016/j.talanta.2017.01.084 cc-by-nc-nd (c) Elsevier B.V., 2017 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess Elsevier B.V. Articles publicats en revistes (Enginyeria Química i Química Analítica)