title: Comparison of two analytical procedures for the determination of free urinary catecholamines under the demands of shiftwork experiments.
abstract: A typical shiftwork experiment was chosen to prove the validity of an automated procedure for the analysis of free noradrenaline and adrenaline in urine. The method consists of a column switching technique with an adsorption/elution clean-up and a reversed phase high performance liquid chromatography followed by chemical reaction detection based on the trihydroxyindole method. The analysis of variance was performed using a second data set obtained by a semi-automated procedure for which the accuracy had already been confirmed. The analysis of covariance showed that for field studies, as well as for laboratory experiments in which the variances contributed by the experiments themselves are greater than 10% rel., the data sets of the two methods provide the same information.
authors.affiliation: Institute of Work Physiology, University of Dortmund, Federal Republic of Germany.
authors.forename: J
authors.initials: J
authors.lastname: Rutenfranz
authors.forename: W
authors.initials: W
authors.lastname: Ottmann
authors.forename: B
authors.initials: B
authors.lastname: Neidhart
authors.forename: W
authors.initials: W
authors.lastname: Brockmann
mesh_terms: D001322:Autoanalysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002940:Circadian Rhythm; D004837:Epinephrine / Q000652:urine*; D006801:Humans; D009638:Norepinephrine / Q000652:urine*; D014937:Work; D014940:Work Schedule Tolerance
chemical_list: D009638:Norepinephrine; D004837:Epinephrine