Studies regarding the optimization of the solvent consumption in the determination of…

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Article Title:	Studies regarding the optimization of the solvent consumption in the determination of organochlorine pesticides from green fodder
Authors:	Adriana Chis*
Affiliation:	Department of Food control, Environment Protection Faculty, University of Oradea, Romania
Abstract:	The determination of organochlorine pesticides from the samples of green fodders submitted to testing was made through the gas chromatography method using capillary columns and detector with electrons capture. In order to separate the contaminants from green fodders, a method specific to non-fat aliments was performed. This method requires the use of three subsequent elutions with 200 ml ethylic ether/light petroleum, in variable proportions. For the purpose of optimizing the method, there were determinations performed on the same samples through extraction in the normal variant and in reduced variants (1:2, respectively 1:5). This way, I could verify the level up to which the solvent consumption can be reduced without affecting the accuracy of the determination. The practical determinations proved that the reduced variant 1:2 has both qualitative and quantitative determination application in the case of green fodders.
Keywords:	green fodder, optimisation, organochlorine pesticides
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*Correspondence:	Chis A. M., University of Oradea, Department of Food control, Environment Protection Faculty, no. 26 Gen, Magheru Bd., Oradea, 410048, e-mail: andichis@yahoo.com