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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Salarian, Mani Fakhari, Ali Reza Nojavan, Saeed Shahsavani, Abolfath Behbahani, Mohammad Tabani, Hadi Bagheri, Akbar |
| Description | Country affiliation: Iran Author Affiliation: Tabani H ( Department of Chemistry, Faculty of Sciences, Shahid Beheshti University, G.C., PO Box 193965 4716, Evin, Tehran, Iran.) |
| Abstract | Combination of different extraction methods is an interesting and debatable work in the field of sample preparation. In the current study, for the first time, solid phase extraction combined with electro membrane extraction (SPE-EME) was developed for ultra-preconcentration and determination of chlorophenoxy acid herbicides in environmental samples using capillary electrophoresis (CE). In the mentioned method, first, a 100mL of chlorophenoxy acid herbicides (2-methyl-4-chlorophenoxyacetic acid (MCPA), 2-(2,4-dichlorophenoxy) propanoic acid (2,4-DP) and 2-(4-chloro-2-methylphenoxy) propanoic acid (MCPP)) was passed through a column of graphene oxide as a solid phase, and then the adsorbed herbicides were eluted by 4.0mL of 8% acetic acid (HOAC) in methanol. Then, the elution solvent was evaporated and the herbicides residue was dissolved in 4.0mL of double distilled water (pH 9.0). Afterwards, the herbicides in 4.0mL of the aqueous solution were transferred to an EME glass vial. In the EME step, the herbicides were extracted from the sample solution into the basic acceptor solution (pH 13.0) under electrical potential, which was held inside the lumen of the fiber with 1-octanol as the supported liquid membrane (SLM). Under the optimized conditions, high enrichment factors were obtained in the range of 1950-2000. The limits of quantification (LOQs) and method detection limits (MDLs) were obtained in the range of 1.0-1.5 and 0.3-0.5ngmL(-1), respectively. Finally, the performance of the present method was evaluated for extraction and determination of chlorophenoxy acid herbicides in environmental samples. |
| ISSN | 00219673 |
| Volume Number | 1300 |
| e-ISSN | 18733778 |
| Journal | Journal of Chromatography A |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-07-26 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Graphite Chemistry Herbicides Isolation & Purification Phenoxyacetates Solid Phase Extraction Methods Water Pollutants, Chemical 1-octanol Electrophoresis, Capillary Analysis Hydrogen-ion Concentration Membranes, Artificial Reproducibility Of Results Research Design Rivers Journal Article Research Support, Non-u.s. Gov't Discipline Analytical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Medicine Analytical Chemistry Biochemistry |
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