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

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
References: Chiş A., Analytic methods for confirming the presence of chlorinated pesticide residues in high-fat foods, The 4th International Symposium „Natural resources and sustenable developement”, Oradea 10- 11 October 2006, p.599
EFSA, a, 2005, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a request from the Commission related to Gamma – HCH and other hexachlorocyclohexanes as undesirable substances in animal feed, The EFSA Journal, 250, pp. 1-39
EFSA, a, 2006, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a reques tfrom the Commission related to Endosulfan as undesirable substances in animal feed, The EFSA Journal, 234, pp. 1-31
EFSA, b, 2005, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a request from the Commission related to Endrin as undesirable substances in animal feed, 2005, The EFSA Journal, 286, pp. 1-31
EFSA, b, 2006, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a reques tfrom the Commission related to DDT as undesirable substances in animal feed, The EFSA Journal, 433, pp. 1-69
Gocan S., 1998, High-performance cromatography, part I, gas chromatography, Dacia Publishing House, Cluj Napoca
Hura C., 2006, Laboratory guide – Analysis methods for food products, Editura Cermi, Iaşi
LEGIS – Romanian legislation
Savu C., Georgescu N., 2004, Food safety, “Semne” Publishing House, Bucharest
Schenck, F.J. and J. Hobbs, 2004, Evaluation of a quick, easy, cheap, effective, rugged and safe (QuEChERS) approach to pesticide residue analysis, Bull. Environ. Contam. Toxicol.73(1), pp. 24-30
SR EN 12393-2, 2003, Produse alimentare negrase. Metode multireziduu pentru derminarea gaz-cromatografică a reziduurilor de pesticide, Partea 2 : metode de extracţie şi purificare
SR EN 12393-3, 2003, Produse alimentare negrase. Metode multireziduu pentru derminarea gaz-cromatografică a reziduurilor de pesticide, Partea 3 : Determinare şi teste de confirmare
Tadeo, J. L., (ed.), 2008, Analysis of Pesticides in Food and Environmental Samples, CRC Press, Taylor & Frances Group Boca Raton, London, New York
Read_full_article: pdf/20-2010/20-1-2010/SU20-1-10Chis.pdf
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

Read full article
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
References: Chiş A., Analytic methods for confirming the presence of chlorinated pesticide residues in high-fat foods, The 4th International Symposium „Natural resources and sustenable developement”, Oradea 10- 11 October 2006, p.599
EFSA, a, 2005, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a request from the Commission related to Gamma – HCH and other hexachlorocyclohexanes as undesirable substances in animal feed, The EFSA Journal, 250, pp. 1-39
EFSA, a, 2006, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a reques tfrom the Commission related to Endosulfan as undesirable substances in animal feed, The EFSA Journal, 234, pp. 1-31
EFSA, b, 2005, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a request from the Commission related to Endrin as undesirable substances in animal feed, 2005, The EFSA Journal, 286, pp. 1-31
EFSA, b, 2006, Opinion of the Scientfic Panel on Contaminants in the Food Chain on a reques tfrom the Commission related to DDT as undesirable substances in animal feed, The EFSA Journal, 433, pp. 1-69
Gocan S., 1998, High-performance cromatography, part I, gas chromatography, Dacia Publishing House, Cluj Napoca
Hura C., 2006, Laboratory guide – Analysis methods for food products, Editura Cermi, Iaşi
LEGIS – Romanian legislation
Savu C., Georgescu N., 2004, Food safety, “Semne” Publishing House, Bucharest
Schenck, F.J. and J. Hobbs, 2004, Evaluation of a quick, easy, cheap, effective, rugged and safe (QuEChERS) approach to pesticide residue analysis, Bull. Environ. Contam. Toxicol.73(1), pp. 24-30
SR EN 12393-2, 2003, Produse alimentare negrase. Metode multireziduu pentru derminarea gaz-cromatografică a reziduurilor de pesticide, Partea 2 : metode de extracţie şi purificare
SR EN 12393-3, 2003, Produse alimentare negrase. Metode multireziduu pentru derminarea gaz-cromatografică a reziduurilor de pesticide, Partea 3 : Determinare şi teste de confirmare
Tadeo, J. L., (ed.), 2008, Analysis of Pesticides in Food and Environmental Samples, CRC Press, Taylor & Frances Group Boca Raton, London, New York
*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