| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313256 |
| ISSN: | 0100-4042 |
| Autores: | Bisinoti, Marcia Cristina1 Jardim, Wilson F2 Brito-Junior, Jose Lailson3 Malm, Olaf Guimaraes, Jean Remy |
| Instituciones: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Biologia, Botucatu, Sao Paulo. Brasil 2Universidade Estadual de Campinas, Instituto de Quimica, Campinas, Sao Paulo. Brasil 3Universidade Federal do Rio de Janeiro, Instituto de Biofisica, Rio de Janeiro. Brasil |
| Año: | 2006 |
| Periodo: | Nov |
| Volumen: | 29 |
| Número: | 6 |
| Paginación: | 1169-1174 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | In this work a simple and sensitive procedure to extract organic mercury from water and sediment samples, using methylene chloride in acidic media followed by CVAFS quantification has been developed. The method was evaluated for possible interferents, using different inorganic mercury species and humic acid, no effects being observed. The detection limit for organic mercury was 160 pg and 396 pg for water and sediment samples respectively. The accuracy of the method was evaluated using a certified reference material of methylmercury (BCR-580, estuarine sediment). Recovery tests using methylmercury as surrogate spiked with 1.0 up to 30.0 ng L-1 ranged from 90 up to 109% for water samples, whereas for sediments, recoveries ranged from 57 up to 97% |
| Disciplinas: | Química, Geociencias |
| Palabras clave: | Química analítica, Sedimentos, Agua, Metilmercurio, Cuantificación química, Monocloruro de bromo |
| Keyword: | Chemistry, Earth sciences, Analytical chemistry, Sediments, Water, Methylmercury, Chemical quantification, Bromine chloride |
| Texte intégral: | Texto completo (Ver HTML) |
