Pakade, Yogesh B. and Sharma, Ruchi and Nadda , Gireesh and Tewary, D K (2013) ANALYTICAL METHOD FOR DETERMINATION OF ORGANOCHLORINE PESTICIDES IN TEA BREWS USING SINGLE-DROP MICROEXTRACTION WITH GC-ECD. International Journal of Food Properties, 16. pp. 745-755.

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Abstract

The single drop microextraction method was developed for the determination of ten organochlorine pesticides in tea brews using gas chromatograph-electron capture detector. The optimized parameters for effective extraction required a 2 μL drop of n-hexane at the tip of a microsyringe immersed in 5 mL of a diluted tea brew sample for 25 min and stirred at 600 rpm. The limit of detection in the range of 0.01 to 0.025 μg/L, with relative standard deviation of repeatability and reproducibility, was in the range of 1–10 and 8–24%. The relationship of the measured signal was a linear function (>0.9863) of concentration and the recovery method ranged from 92–116%. The single drop microextraction method showed the advantage of being easy to operate, low consumption of organic solvent, and high extraction efficiency.

Item Type:	Article
Uncontrolled Keywords:	Single-drop microextraction, Gas chromatography, Organochlorine pesticides, Tea brew.
Subjects:	Pest and Pesticides
Divisions:	UNSPECIFIED
Depositing User:	Dr. Aparna Maitra Pati
Date Deposited:	03 Apr 2013 08:08
Last Modified:	03 Apr 2013 08:08
URI:	http://ihbt.csircentral.net/id/eprint/1325

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