title: Direct and kinetic fluorimetric methods for determination of micro amounts of Ti(IV), based in its catalytic effect on aerial oxidation of picolinaldehyde nicotinoylhydrazone.
abstract: The oxidation of the new reagent picolinaldehyde nicotinoylhydrazone by atmospheric and/or dissolved oxygen is catalysed by traces of Ti(IV), and produces a fluorescent product. Monitoring the fluorescence provides one non-kinetic and three kinetic (initial-rate, fixed-time and fixed-intensity) methods for determination of Ti(IV) at the 60-400 ng/ml level. The variables affecting these methods have been optimized and the tolerance levels for foreign ions determined.
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Spain.
authors.forename: M D
authors.initials: MD
authors.lastname: de Castro
authors.forename: M
authors.initials: M
authors.lastname: Valcarcel