Análise potenciométrica de redissolução com ultramicroeletrodos: fundamentos e aplicações na determinação de metais traços Potentiometric stripping analysis with ultramicroelectrodes: theoretical foundation and applications in trace metals determination
| Autor: | Ana Lúcia da Rocha Nobre, Luiz Henrique Mazo |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 20, Iss 4, Pp 412-419 (1997) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| DOI: | 10.1590/S0100-40421997000400012 |
| Popis: | The Potentiometric Stripping Analysis (PSA) is described with emphasis on ultramicroelectrode applications with a laboratory developed computer based instrumentation. The technique potentialities as compared with the voltammetric approach are pointed out based on the current literature. Some results of trace metals analysis including zinc, cadmium, lead and copper in vinegar and canned food samples are presented. The mainly advantage found in our laboratory was the technique capability to analyse natural samples with minimum matrix interference and the low level of noise found in our determinations. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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