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Title: | Determination of Pd(II) using an antimony film coated on a screen-printed electrode by adsorptive stripping voltammetry |
Author: | Pérez Ràfols, Clara Trechera, Pedro Serrano i Plana, Núria Díaz Cruz, José Manuel Ariño Blasco, Cristina Esteban i Cortada, Miquel |
Keywords: | Pal·ladi (Element químic) Voltametria Palladium Voltammetry |
Issue Date: | 4-Feb-2017 |
Publisher: | Elsevier B.V. |
Abstract: | 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 |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.talanta.2017.01.084 |
It is part of: | Talanta, 2017, vol. 167, p. 1-7 |
URI: | http://hdl.handle.net/2445/125567 |
Related resource: | https://doi.org/10.1016/j.talanta.2017.01.084 |
ISSN: | 0039-9140 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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