| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000201389 |
| ISSN: | 0100-4042 |
| Authors: | Campos, Maria Lucia A.M1 Bendo, Anderson Viel, Fabiola C |
| Institutions: | 1Universidade Federal de Santa Catarina, Departamento de Quimica, Florianopolis, Santa Catarina. Brasil |
| Year: | 2002 |
| Season: | Sep-Oct |
| Volumen: | 25 |
| Number: | 5 |
| Pages: | 808-813 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, divulgación |
| English abstract | Probably one of the most difficult and challenging aspects of measuring trace metals in natural waters is to avoid contamination during sampling, manipulation and analysis. This work discusses how to avoid contamination using simple procedures, and considers alternative methods to purify deionised water and low grade reagents to enable accurate determination of trace metals in natural waters in a common laboratory. Measurements were performed by cathodic stripping voltammetry and copper was used as a model metal to test the procedures. It was possible to evaluate copper speciation in natural waters even when total dissolved copper concentration was as low as 1.5 nmol L-1. The methods' accuracy was confirmed by analysis of certified seawater |
| Disciplines: | Química |
| Keyword: | Química analítica, Contaminación, Cobre, Especiación, Voltametría, Análisis de agua, Trazas, Metales |
| Keyword: | Chemistry, Analytical chemistry, Copper, Speciation, Voltammetry, Water analysis, Traces, Metals |
| Full text: | Texto completo (Ver HTML) |
