title: Application of photochemical inhibition in flow injection systems: Determination of epinephrine and L-dopa.
abstract: An automated procedure for the photochemical determination of epinephrine and L-dopa has been developed. It is based on the strong inhibition by these catecholamines on the photochemical reaction between phloxin and ethylenediaminetetraacetic. The proposed flow-injection method allows the fluorimetric determination of epinephrine in the range 1.9-26.4 mug/ml and of L-dopa in the range of 1.5-12.7 mug/ml, with a sampling frequency of 35 samples/hr. The method was applied successfully to the determination of body catecholamines in pharmaceutical preparations.
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, Murcia, Spain.
authors.forename: T
authors.initials: T
authors.lastname: Pérez-Ruíz
authors.forename: C
authors.initials: C
authors.lastname: Martínez-Lozano
authors.forename: V
authors.initials: V
authors.lastname: Tomás
authors.forename: O
authors.initials: O
authors.lastname: Val