| Autor: |
Glennon, Jeremy D, Harris, Stephen J, Walker, Andrew, McSweeney, Conor C, O'Connell, Mark |
| Zdroj: |
Gold Bulletin; Jun1999, Vol. 32 Issue 2, p52-58, 7p |
| Abstrakt: |
A series of fluorinated calixarene derivatives, with lower rim sulfur-donor atoms, were synthesized and studied for the sequestration of gold using supercritical fluid extraction. Following temperature and pressure optimization and using extracts collected in methyliso-butyl ketone, analysis by flame atomic absorption spectrometry reveals that Au(III) can be efficiently complexed and extracted by a novel calix[4]arene thiourea reagent in supercritical CO2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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