title: Simultaneous flow-injection determination of chlorpromazine and promethazine by photochemical reaction.
abstract: Chlorpromazine and promethazine were simultaneously determined by irradiating flow-injection manifolds with ultraviolet light. The simultaneous determination was based on the difference in pH of the media where the photochemical conversion of each phenothiazine into a fluorescent product took place. The choice of the best flow-injection configuration and mathematical treatment for solving the mixtures are discussed. Chlorpromazine and promethazine can be simultaneously determined at the mug/ml level with r.s.d. values between 2 and 4% and sampling frequencies in the range 30-40/hr.
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, 14004 Córdoba, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Chen
authors.forename: A
authors.initials: A
authors.lastname: Ríos
authors.forename: M D
authors.initials: MD
authors.lastname: Castro
authors.forename: M
authors.initials: M
authors.lastname: Valcárcel