title: An indirect method for determining phosphorus in aluminium alloys by atomic-absorption spectrometry.
abstract: An indirect method is described for the determination of phosphorus in aluminium alloys. Ammonium molybdate is added to a solution of the aluminium alloy and the molybdophosphoric acid formed is selectively extracted into n-butyl acetate. The twelve molybdenum atoms associated with each phosphate ion are determined by direct atomic-absorption spectrometry with the n-butyl acetate phase in a nitrous oxide-acetylene flame, with measurement at 313.2 nm. The most suitable conditions have been established and the effect of other ions has been studied.
authors.affiliation: Department of Analytical Chemistry, Faculty of Science, Prado de la Magdalena, Valladolid, Spain.
authors.forename: J L
authors.initials: JL
authors.lastname: Bernal
authors.forename: M A
authors.initials: MA
authors.lastname: Del Nozal
authors.forename: L
authors.initials: L
authors.lastname: Deban
authors.forename: A J
authors.initials: AJ
authors.lastname: Aller