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Abstract
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Article Information:
Gas Chromatographic Methodology for the Determination of Some Halogenated Pesticides
S. Afful, E. Enimil, B. Blewu, G. Adjei Mantey and E.A. Ewusie
Corresponding Author: Samuel Afful
Submitted: 2010 July, 14
Accepted: 2010 August, 15
Published: 2010 September, 10 |
Abstract:
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A Gas Chromatography (GC) methodology has been validated for the determination of some
halogenated pesticides. Complete separation of the pesticide prepared in ethyl acetate was achieved on Rtx -
1 column with dimension, 30m x 0.25mm x 0.25:m. The GC equipped with electron capture detector was run
using column temperature programmed from 80ºC (2 min) to 200ºC (15 min) at the rate of 4ºC/min giving a
total analysis time of 47 min. The detector and injector were respectively at temperatures of 300 and 225ºC.
The method was validated with respect to precision in terms of reproducibility of retention times and peak
heights, linearity and minimum detectable quantity of the pesticides. Under the operated GC conditions, diuron
eluted first while heptachlor epoxide was the last to elute. The chromatographic detector was more sensitive
to "-endosulfan and $-endosulfan with Minimum Detectable Quantity (MDQ) of 0.002 ng. The detector was
however, less sensitive to captan with MDQ of 0.08 ng. Margins of errors associated with the precision of the
method in terms of reproducibility of retention times yielded standard deviation in the range of 0.026-0.063.
Key words: Chromatography, detected, linear range, methodology, pesticides, ,
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Abstract
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Cite this Reference:
S. Afful, E. Enimil, B. Blewu, G. Adjei Mantey and E.A. Ewusie, . Gas Chromatographic Methodology for the Determination of Some Halogenated Pesticides. Research Journal of Applied Sciences, Engineering and Technology, (6): Page No: 592-595.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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