| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199679 |
| ISSN: | 0100-4042 |
| Autores: | Marins, Rozane V1 Paraquetti, Heloisa Helena M Ayres, Gisele A |
| Instituciones: | 1Universidade Federal do Ceara, Instituto de Ciencias do Mar, Fortaleza, Ceara. Brasil 2Universidade Federal Fluminense, Departamento de Geoquimica, Niteroi, Rio de Janeiro. Brasil |
| Año: | 2002 |
| Periodo: | May-Jun |
| Volumen: | 25 |
| Número: | 3 |
| Paginación: | 372-378 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, descriptivo |
| Resumen en inglés | The determination of the physical-chemical mercury speciation in tropical coastal waters using the derivatization technique with CVAFS detection was optimized. This methodology is able to separate the elementary, reactive, organic and total mercury phases with low operational costs. The importance of bromide chloride solution, the diluted aqua regia, used as the oxidative solution, and different compositions of the reductive solution of stannous chloride were tested and the better results for coastal waters are presented. The recuperation of the sum of the different phases ranges from 80 to 94% of the total Hg content in duplicates of different marine samples. The optimized methodology permits important studies on the mercury cycle in the coastal environment |
| Disciplinas: | Química, Ingeniería |
| Palabras clave: | Química analítica, Ingeniería ambiental, Mercurio, Agua, Análisis de agua, Aguas costeras |
| Keyword: | Chemistry, Engineering, Analytical chemistry, Environmental engineering, Mercury, Water, Water analysis, Coastal waters |
| Texte intégral: | Texto completo (Ver HTML) |
