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ابراهيم بن مبارك عبدالله الدوسري

Lecturer

أخصائي

كلية العلوم
2 ب 85 م5
publication
Journal Article
2011

Multi-residues Analysis of Pesticides using Gas Chromatography Mass Spectrometry: 1- Leafy Vegetables

Al-Dossari, 2M.T. Selim, 'M.H. EL-Saeid and 2I.M. . 2011

Leafy vegetables pesticides residue analysis GC-MS

The  aim  of this study is to monitor the pesticide residues in leafy vegetable and to develop the efficient Liquid Chromatography for the extraction and  GC/MS for   the  analysis of  investigated
86  pesticides in  leafy vegetables. More  than 550  samples of leafy vegetables have been collected from Riyadh, Al-Tamer vegetables market, one  of the three major fruit and vegetable markets in Riyadh, Saudi Arabia during two  years, i.e.,   2007-2008. A  multi-residue  analysis  method was developed and  described for simultaneously determination of 86 pesticides commonly used in crops, usmg  a  broad range  of  physico-chemical properties  in  leafy vegetables related  to Organophosphorous, Organochlorines, Pyrethroids  and Carbamates  which commonly used in agriculture commodities. Good  sensitivity and selectivity of the method were obtained with the limits of quantification 0.0001 mg kg-1 in  almost of all.  The  method was  satisfactorily applied to routine analysis as  a  complement to  traditional  GC-MS method and the limit of detection  was generally 10-20 times lesser than  the Maximum Residue Levels (MRLs)   established by  Codex Alimentarius Commission. Pesticide  residues  were detected  in   24.69%  of  the  tested  samples (140 samples from the  total of 567 samples). Meanwhile, the detected pesticides concentration had been exceeded the MRL in  18.34% of the total tested samples under this investigation.

Publication Work Type
بحثي
Volume Number
5
Issue Number
3
Magazine \ Newspaper
Research Journal of Environmental Sciences
Pages
248 الى 258
more of publication
publications

The  aim  of this study is to monitor the pesticide residues in leafy vegetable and to develop the efficient Liquid Chromatography for the extraction and  GC/MS for   the  analysis of  …

by 2M.T. Selim, 'M.H. EL-Saeid and 2I.M. Al-Dossari
2011