| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Estadual Campinas, Inst Chem, Dept Analyt Chem, BR-13084971 Campinas, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | Journal of the Brazilian Chemical Society; v. 26, n. 2, p. 310-318, FEB 2015. |
| Web of Science Citations: | 4 |
| Abstract | |
Electric field-assisted solid phase extraction using syringe type cartridges (E-SPE) is a recent approach with a high capacity to obtain differential selectivity and/or recovery in comparison with conventional solid phase extraction (SPE). In this work, E-SPE was employed for the extraction of the anionic dye sunset yellow. During the washing step the electric field was evaluated with the top electrode negatively (E-SPE(–/+)) or positively charged (E-SPE(+/–)) and the results were compared with conventional SPE to understand how the electrochromatographic parameters can influence the recovery of the dye. Using the E-SPE(–/+) the electric field can increase the elution of the dye from the cartridge by over 57-fold. This notable result can be attributed to the electrophoretic velocity of the dye in the direction of the flow rate of the eluent. These results demonstrated that E-SPE is an interesting approach to elute ionic compounds with reduced volumes of eluent or less amount of organic solvent. (AU) | |
| FAPESP's process: | 08/03064-1 - Application of electric potential in solid phase extraction procedures |
| Grantee: | Susanne Rath |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 07/07079-0 - Application of electric potentials in procedures of solid phase extration |
| Grantee: | Ricardo Mathias Orlando |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 08/57808-1 - National Institute of Advanced Analytical Science and Technology |
| Grantee: | Celio Pasquini |
| Support Opportunities: | Research Projects - Thematic Grants |