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Determination of Veterinary Drug Residues in Milk by GC/MS and GC/ECD
EP21988
Poster Title: Determination of Veterinary Drug Residues in Milk by GC/MS and GC/ECD
Submitted on 10 Jun 2014
Author(s): Yu Chongtian, Lv Jianxia
Affiliations: Thermo Fisher Scientific
Poster Views: 2,881
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Poster Information
Abstract: Amitraz, N´-(2,4-dimethylphenyl)-N-[(2,4-dimethylphenyl)-imino]methyl-N-methyl- methanimidamide, is an acaricide used to control the infections produced by the mites on cattle. Its use can cause the presence of residues in milk. For this reason, the analysis of amitraz residues in milk has received special attention in the scientific bibliography as opposed to milk analysis. On the other hand, amitraz is a very labile pesticide whose degradation products contain the 2,4-dimethylaniline moiety[1-3]. Thus, the analysis of all the residues containing this substructure is advisable. In this context, the aim of this work has been to develop a method to determine the amitraz total residues in milk.Summary: Purpose: Develop a rapid, sensitive method for determining amitraz and its metabolites in milk.
Methods: Samples were hydrolyzed in acidic condition and extracted with hexane. After derivativation, the samples were analyzed by GC-ECD or directly by GC-MS.
Results: The results show that GC-MS determination of amitraz and its metabolites is rapid and sensitive.
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