Citation
Chai, Alvin Lian Kuet and Lau, Seng
(2003)
Determination of Organophosphorus Pesticides in Vegetables
by Solid-Phase Extraction Cleanup and
Gas Chromatography.
Pertanika Journal of Science & Technology, 11 (1).
pp. 93-105.
ISSN 0128-7680
Abstract
A simple and rapid gas chromatography method has been developed for
simultaneous determination of organophosphorus pesticides in vegetables.
Residues are extracted with acetone and dichloromethane. Extracts are cleaned
up by a mixed-mode solid-phase extraction column, quaternary amine and
aminopropyl silane. The pesticides are determined by gas chromatography
using a flame photometric detector. The recoveries for 9 pesticides in three
vegetables: carrot, cucumber and green mustard, fortified at 0.5 mg/kg were in
the range of 80.3% to 115.0%. Lower recoveries were obtained for
methamidophos and dimethoate. The results were compared to the method
currently used in the laboratory which does not include any cleanup.
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Additional Metadata
Item Type: |
Article
|
Publisher: |
Universiti Putra Malaysia Press |
Keywords: |
Solid phase extraction, organophosphorus pesticides, gas
chromatography |
Depositing User: |
Nur Izyan Mohd Zaki
|
Date Deposited: |
01 Dec 2009 04:14 |
Last Modified: |
27 May 2013 07:10 |
URI: |
http://psasir.upm.edu.my/id/eprint/3746 |
Statistic Details: |
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