期刊
JOURNAL OF ANALYTICAL CHEMISTRY
卷 70, 期 4, 页码 419-423出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1061934815040024
关键词
diethylstilbestrol; ractopamine; gas-liquid chromatography; electron-capture detector; QuEChERS; dispersion liquid-liquid microextraction
A simple and rapid method has been proposed for the determination of 1-25 mu g/kg of diethylstilbestrol and beta-adrenostimulator ractopamine in food by gas-liquid chromatography with an electron-capture detector. The extraction of the target components was performed by the QuEChERS method; the additional purification of the extract and preconcentration in the determination of diethylstilbestrol has been performed by dispersion liquid-liquid microextraction with tetrachloromethane. Recovery was 92-110% and preconcentration factor, 40. The time of analysis is 1.5-2 h; the relative standard deviation of the results of analysis does not exceed 10 %.
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