A retiabte and sensitive method is developed for the detection of β-blockerswhich are excreted in free or conjugated forms in human urine.9 β-blockers werederivatized by MSTFA and MBTFA and subjected to GC/MSB analysis.Both chromato-grams and mass spectrometric data were obtained from full scanning mode.This methodis suitable for routine screening and confirmation of β-blockers in doping control.
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机译：Uso referido de medicamentos e suplementos alimentares nos atletas selecionados para controle de doping nos Jogos sul-americanos Uso referido de medicinas y suplementos alimenticios en los atletas seleccionados para control de doping en los Juegos sudamericanos在选择用兴奋剂的运动员中使用药物和膳食补充剂控制南美运动会
