Szczegóły publikacji
Opis bibliograficzny
Novel sensitive voltammetric detection of trace gallium(III) with presence of catechol using mercury film silver based electrode / Robert PIECH // Electroanalysis : an International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis ; ISSN 1040-0397 . — 2009 — vol. 21 no. 16, s. 1842–1847. — Bibliogr. s. 1847, Abstr.
Autor
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 47347 |
|---|---|
| Data dodania do BaDAP | 2009-10-09 |
| Tekst źródłowy | URL |
| DOI | 10.1002/elan.200904621 |
| Rok publikacji | 2009 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Electroanalysis |
Abstract
A new adsorptive stripping voltammetric method for the determination of trace gallium(III) based on the adsorption of gallium(III)-catechol complex on the cyclic renewable mercury film silver based electrode (Hg(Ag)FE) is presented. The effects of various factors such as: preconcentration potential and time, pulse height, step potential and supporting electrolyte composition are optimized. The calibration graph is linear from 2 nM (0.14 mg L 1) to 100 nM (6.97 mg L 1) for a preconcentration time of 30 s, with correlation coefficient of 0.9993. For a Hg(Ag)FE with a surface area of 9.7 mm2 the detection limit for a preconcentration time of 90 s is as low as 7 ng L 1. The repeatability of the method at a concentration level of the analyte as low as 0.05 mg L 1, expressed as RSD is 3.6% (n5). The proposed method was successfully applied by studying the natural samples and simultaneous recovery of Ga(III) from spiked water and sediment samples. © 2009 Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim.
