Alvin, Chai Lian Kuet and Lau, Seng (2008) Comparative study on cleanup procedures for the determination of organophosphorus pesticides in vegetables. Malaysian Journal of Analytical Sciences, 12 (1). pp. 105-110. ISSN 1394-2506
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Abstract
A study was carried out to compare the cleanup procedures for the determination of organophosphorus pesticides in vegetables. Eleven organophosphorus pesticides were extracted with acetone and methylene chloride. Extracts were cleanup by solid-phase extraction (SPE) mixed-mode column using quaternary amine and aminopropyl (SAX/NH2) or octadecyl (C18) sorbents. The pesticides were determined by gas chromatography with flame photometric detector. The recovery results obtained from the SPE SAX/NH2 and C18 cleanups in carrot, cucumber and green mustard samples were in the range of 71.0 % to 115 %. Lower recoveries were obtained for polar pesticides, methamidophos and dimethoate. These results were compared to the method currently used in the laboratory which does not include any cleanup.
| Item Type: | Article |
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| Uncontrolled Keywords: | Inorganic, Organic, Physical And Analytical Chemistry (S37), Radiation, Thermal, And Other Environmental Pollutant Effects On Living Organisms And Biological Materials (S63) , unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education ,research, Universiti Malaysia Sarawak |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry S Agriculture > SB Plant culture |
| Divisions: | Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology Faculties, Institutes, Centres > Faculty of Resource Science and Technology |
| Depositing User: | Karen Kornalius |
| Date Deposited: | 24 Jun 2015 03:32 |
| Last Modified: | 06 Mar 2017 06:40 |
| URI: | http://ir.unimas.my/id/eprint/7926 |
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