Preconcentration of Trace Elements by Sorption
| Autor: | Kikuo Terada |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Chromatography
trace metal transition metal Silica gel Natural water Inorganic chemistry Heavy metals Sorption complexing agent immobilized silica gel Analytical Chemistry sorption behavior chemistry.chemical_compound Adsorption chemistry analytical selectivity natural water Trace metal Chelation complexing agent loaded silica gel Preconcentration Selectivity |
| Zdroj: | Analytical Sciences. 7:187-198 |
| ISSN: | 1348-2246 0910-6340 |
| DOI: | 10.2116/analsci.7.187 |
| Popis: | In the determination of trace elements in complex matrices, enrichment and separation of the analytes is of special importance. A wide variety of methods have been proposed for preconcentration according to the nature of the samples, the types and concentrations of the analytes, and the methods to be used for measurement. Among them, the preconcentration techniques based on sorption seem to be convenient, rapid and capable of attaining a high concentration factor. Various efforts have been made to improve selectivity, rate and capacity of sorption, specially for heavy metals in natural waters. The use of silica gel as a support for loading or chemically immobilizing with complexing agents is a particular example. In this paper, the preparation and characterization of complex-forming adsorbents for the sorption of heavy metals will be critically reviewed, laying stress on the utilization of silica gel as a supporting material. © 1991, The Japan Society for Analytical Chemistry. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink