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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Luque de Castro, M. D. Alvarez Sánchez, B. Priego Capote, F. |
| Description | Country affiliation: Spain Author Affiliation: Alvarez Sánchez B ( Department of Analytical Chemistry, Annex C-3 Building, Campus of Rabanales, University of Córdoba, Córdoba, Spain.) |
| Abstract | A continuous ultrasound-assisted approach to enhance the extraction of nine haloacetic acids (HAAs) from vegetables with in situ derivatization to methyl esters for their gas chromatography (GC) analysis is presented. The optimization of simultaneous extraction (using acidic methanol as extractant) and derivatization enabled the completion of both steps in 15 min. Ultrasound assistance has proved to enhance both linked steps, which results in a considerable shortening of the overall analysis time (i.e. 552.1 and 552.2 EPA methods for analysis of these compounds in drinking water require 1 and 2 h, respectively, only for derivatization). After sample preparation, the esterified HAAs were isolated by liquid-liquid extraction with n-hexane and analysed by GC-electron capture detection. The proposed method is an interesting alternative to present methods for the determination of HAAs in vegetable foods. This is an area unjustifiably forgotten by reference laboratory organisms as proved by the absence of official methods for analysis of the target compounds in these samples. The proposed method can be applied to the analysis of HAAs in any solid sample after optimization of the main variables involved in the extraction-derivatization step. |
| ISSN | 00219673 |
| Issue Number | 1 |
| Volume Number | 1201 |
| e-ISSN | 18733778 |
| Journal | Journal of Chromatography A |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2008-08-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Disinfectants Isolation & Purification Food Analysis Hydrocarbons, Halogenated Solid Phase Extraction Methods Ultrasonics Vegetables Chemistry Chromatography, Gas Kinetics Evaluation Studies 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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