| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313347 |
| ISSN: | 0100-4042 |
| Autors: | D'Agostinho, Adriana1 Flues, Marlene |
| Institucions: | 1Comissao Nacional de Energia Nuclear, Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo. Brasil |
| Any: | 2006 |
| Període: | Jul |
| Volum: | 29 |
| Número: | 4 |
| Paginació: | 657-661 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Leaking of diesel oil from gas stations is frequent in Brazil. The presence of polycyclic aromatic hydrocarbons (PAHs), which are highly toxic is an indication of contamination by heavy hydrocarbons from diesel oil. Here were present the determination of the distribution coefficient (Kd) of benzo(a)pyrene (the most carcinogenic of the PAHs) in tropical soils using the sorption isotherm model. The sorption curves acquired for benzo(a)pyrene were of the S-type, probably due to the water/methanol experimental conditions. The sorption curves allowed calculation of the distribution coefficient (Kd). The experimental Kd values were lower than those calculated from literature Koc values (partition coefficient normalized by organic carbon), due mainly to the cosolvency effect and the percentage of organic matter and clay in soil |
| Disciplines | Química |
| Paraules clau: | Química orgánica, Benzo(a)pireno, Isotermas de sorción, Suelos |
| Keyword: | Chemistry, Organic chemistry, Benzo(a)pyrene, Sorption isotherms, Soils |
| Text complet: | Texto completo (Ver HTML) |
