title: Indirect flame atomic absorption detection for the liquid chromatographic separation of alkaline metals.
abstract: Alkaline metals and ammonium ion are separated by cationic exchange liquid chromatography using a 60 microg ml(-1) aqueous copper solution as the mobile phase at 1.5 ml min(-1). Detection is carried out by measuring copper with an atomic absorption spectrometer directly interfaced to the chromatograph. A simple T-piece is used to compensate the difference between the nebulizer uptake rate and the chromatographic flow-rate with air. The method is applicable to the analysis of alkaline metals and ammonium in waters. Average recovery ( n = 16) was 100.3 +/- 4.0%.
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071, Murcia, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Viñas
authors.forename: N
authors.initials: N
authors.lastname: Campillo
authors.forename: I L
authors.initials: IL
authors.lastname: García
authors.forename: M H
authors.initials: MH
authors.lastname: Córdoba