| Autor: |
Wagner José Barreto, Herica Aparecida Magosso, Miriam Fátima Soares, Bruno Marco Oliveira Silveira, Ieda Spacino Scarminio, Dílson Norio Ishikawa, Sônia Regina Giancoli Barreto |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Eclética Química, Vol 36, Iss 3, Pp 15-20 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
1678-4618 |
| DOI: |
10.26850/1678-4618eqj.v36.3.2011.p15-20 |
| Popis: |
A simple and sensitive UV-Vis spectrophotometric method was developed using a new chromogenic reagent, L-dopasemiquinone, for the quantification of Ni(II) in metallic alloys: Inox, Co-Cr, and Ni-Ti. The complex [Ni(II)(L1-)3]1- presents an intense band at 591 nm, ε = 2.4 x 103 L mol-1 cm-1. Beer’s law is obeyed from 4.02 x 10-5 to 2.01 x 10-4 mol L-1 with limits of detection and quantification of 4.15 x 10-5 mol L-1 and 5.02 x 10-5 mol L-1, respectively. The method was compared with atomic absorption spectrophotometry and inductively coupled plasma atomic emission spectroscopy obtaining good results. Cobalt and Titanium cause low interference in the method. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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