METHOD FOR DETERMINATION OF AMITROLE IN WATER SAMPLE BY CONCENTRATION, DERIVATIZATION AND CHROMATOGRAPHIC TECHNOLOGY

摘要

PURPOSE: A method for determination of amitrole is provided to analyze amitrole in a water sample to the extent in extremely small quantities rapidly and economically. CONSTITUTION: The method for determination of amitrole in a water sample comprises the step of: concentration of the water sample, derivatization by isobutyl chloroformate and analysis of amitrole by a gas chromatography or a gas chromatography/mass spectrometer. In the method, the concentration step is carried out by employing a rotary vacuum evaporator, the derivatization step comprises adding 40-60 l of isobutyl chloroformate to the concentrated sample to react the resultant at room temperature for 15 to 20 min. or comprises dissolving the concentrated sample in 150-250 l of methylene chloride and then adding thereto, 40-60 l of isobutyl chloroformate to react the resultant at room temperature for 15 to 20 min.