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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Nojavan, Saeed Pourahadi, Ahmad Hosseiny Davarani, Saied Saeed Morteza-Najarian, Amin Beigzadeh Abbassi, Mojtaba |
| Description | Country affiliation: Iran Author Affiliation: Nojavan S ( Department of Chemistry, Faculty of Sciences, Shahid Beheshti University, Evin, Tehran, Iran. s_nojavan@sbu.ac.ir) |
| Abstract | This study has performed on electromembrane extraction (EME) of some zwitterionic compounds based on their acidic and basic properties. High performance liquid chromatography (HPLC) equipped with UV detection was used for determination of model compounds. Cetirizine (CTZ) and mesalazine (MS) were chosen as model compounds, and each of them was extracted from acidic (as a cation) and basic (as an anion) sample solutions, separately. 1-Octanol and 2-nitrophenyl octylether (NPOE) were used as the common supported liquid membrane (SLM) solvents. EME parameters, such as extraction time, extraction voltage and pH of donor and acceptor solutions were studied in details for cationic and anionic forms of each model compound and obtained results for two ionic forms (cationic and anionic) of each compound were compared together. Results showed that zwitterionic compounds could be extracted in both cationic and anionic forms. Moreover, it was found that the extraction of anionic form of each model compound could be done in low voltages when 1-octanol was used as the SLM solvent. Results showed that charge type was not highly effective on the extraction efficiency of model compounds whereas the position of charge within the molecule was the key parameter. In optimized conditions, enrichment factors (EF) of 27-60 that corresponded to recoveries ranging from 39 to 86% were achieved. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Journal | Analytica Chimica Acta |
| Volume Number | 745 |
| e-ISSN | 18734324 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-10-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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