The confirmation of diethylstilbestrol residues in beff liver by gas chromatography-mass spectrometry.
A  confirmatory test for the presence of the growth-promoting hormone, diethylstilbestrol (DES), in beef liver is described, Samples are subjected to a published electron capture gas chromatographic method that involves the formation and measurement of the bis-dichloroacetyl derivative of DES. The presence of the derivative is then confirmed by gas chromatography-mass spectrometry, using a repetitive scanning technique to maximize response. The isotope pattern of the tetrachlorinated molecular ion greatly facilitates the confirmation.
D000273:Adipose Tissue / Q000032:analysis; D000818:Animals; D002417:Cattle; D002849:Chromatography, Gas; D004054:Diethylstilbestrol / Q000032:analysis*; D007668:Kidney / Q000032:analysis; D008099:Liver / Q000032:analysis*; D013058:Mass Spectrometry; D008722:Methods
D004054:Diethylstilbestrol