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| Content Provider | Springer Nature Link |
|---|---|
| Author | de Moraes, Solange Leite Rezende, Maria OlĂmpia Oliveira |
| Copyright Year | 2005 |
| Abstract | The possibility of humic acids acting as micellar phase in micellar electrokinetic chromatography was evaluated. We investigated the separation of naphthalene in capillary electrophoresis using various samples of humic acids as micellar phase under different pH conditions, concentrations of humic acid, and temperature. The humic acid samples studied were from different origins including peat, vermicompost and a commercial sample acquired from Aldrich. Methanol was used as a marker for the electroosmotic flow. The results indicate that the formation of micelle depends on the number and nature of the hydrophobic association sites in an aqueous humic acid solution and on the origin and concentration of the humic acid at a defined pH. At lower pH values, the possibility of the humic acid molecule forming pseudomicelles increases due to a combination of neutralized and dissociated charged sites. |
| Starting Page | 115 |
| Ending Page | 122 |
| Page Count | 8 |
| File Format | |
| ISSN | 00263672 |
| Journal | Microchimica Acta |
| Volume Number | 151 |
| Issue Number | 1-2 |
| e-ISSN | 14365073 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2005-07-18 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Inorganic Chemistry Physical Chemistry Monitoring/Environmental Analysis/Environmental Ecotoxicology Analytical Chemistry Characterization and Evaluation Materials |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry |
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