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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Liu, Juanjuan Jiang, Ming Li, Gao Xu, Li Xie, Minjie |
| Description | Country affiliation: China Author Affiliation: Liu J ( Tongji School of Pharmacy, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, Hubei 430030, China.) |
| Abstract | Salting-out liquid-liquid extraction (LLE) uses water-miscible organic solvents as the extractants. The principle of it is based on the phase separation of water-miscible organic solvents from the aqueous solutions in the presence of high concentration of salts. As an effort to miniaturization, in the present study, a 1-mL syringe was employed as the phase separation device for salting-out LLE. Once the phase separation occurred, the upper layer could be narrowed into the needle tip by pushing the plunger; thus, the collection of the upper layer solvent was convenient. By miniaturization, the consumption of organic solvent was decreased as low as possible. Four sulfonamides were used as model analytes. The optimal salting-out parameters were as follows. 150 µL of acetonitrile was added to the 500 µL of sample solution containing 300 mg mL(-1) sodium chloride at a pH of 6.5. This procedure afforded a convenient, fast and cost-saving operation with good cleanup ability for the model analytes. It showed promising applications for different matrices. Herein, food (honey), environmental water (river water) and biological fluid (human urine) were investigated. Satisfactory results were obtained. An additional bonus of this sample preparation method is that, owing to its water-miscible nature, the extraction solvent is compatible with various analytical systems, like gas chromatography, high-performance liquid chromatography and capillary electrophoresis. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Issue Number | 1-2 |
| Volume Number | 679 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-10-29 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Analytic Sample Preparation Methods Chemical Fractionation Methods Microchemistry Sulfanilamides Chemistry Urine Acetonitriles Instrumentation Organic Chemicals Analysis Reproducibility Of Results Solvents Water Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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