Detection of the illegal use of ethinylestradiol in cattle urine by gas chromatography—mass spectrometry |
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Authors: | E Daeseleire A De Guesquire C Van Peteghem |
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Institution: | E. Daeseleire*, A. De Guesquière,C. Van Peteghem |
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Abstract: | A method for the detection of ethinylestradiol in cattle urine is described, based on enzymic hydrolysis of the sample, clean-up by means of disposable octadecyl and amino solid-phase extraction columns, fractionation by reversed-phase high-performance liquid chromatography, and detection by gas chromatography—mass spectrometry (selected-ion monitoring). Identification is based on both gas chromatographic and mass spectrometric data. The method has been tested on urine samples for a collaborative study and all the results found were correct. |
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