| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000313434 |
| ISSN: | 0100-4042 |
| Authors: | Rosa, Andre Henrique1 Goveia, Danielle Bellin, Iramaia C Tonello, Paulo Sergio Antunes, Maria Lucia Pereira Dias-Filho, Newton Luiz2 Rodrigues-Filho, Ubirajara Pereira3 |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Engenharia Ambiental, Sorocaba, Sao Paulo. Brasil 2Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Fisica e Quimica, Ilha Solteira, Sao Paulo. Brasil 3Universidade de Sao Paulo, Instituto de Quimica de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2007 |
| Season: | Feb |
| Volumen: | 30 |
| Number: | 1 |
| Pages: | 59-65 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | In this work commercial filters papers were organomodified with tetraethylorthosilicate (TEOS) and 3-aminopropyltriethoxysilane (3-APTS), aiming at the development of a new analytical procedure for in-situ speciation of labile and inert metal species in aquatic systems. Parameters that exert influence on the metal lability such as pH, chelating time, concentration and characteristics of the organic matter were studied in the laboratory using tests for metal recuperation. The results showed slower kinetics for Cu ion than for Ni, Mn and Cd in the absence of aquatic humic substances (AHS). The relative lability observed for complexed metals in aquatic humic substances using organomodified filter papers was Cu>>Cd>Ni>Mn. The pH values, structural characteristics and concentration of AHS exert strong influence on the lability of the metals. The results obtained showed that the utilization of organomodified filter papers can be an interesting and promising alternative for in situ characterization of metal lability in aquatic systems |
| Disciplines: | Geociencias, Química, Biología |
| Keyword: | Química analítica, Ecosistemas acuáticos, Sustancias húmicas acuáticas, Metales traza, Métodos analíticos |
| Keyword: | Earth sciences, Chemistry, Biology, Analytical chemistry, Aquatic ecosystems, Aquatic humic substances, Trace metals, Analytical methods |
| Full text: | Texto completo (Ver HTML) |
