An indirect method for determining phosphorus in aluminium alloys by atomic-absorption spectrometry.
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.
Bernal
J L
JL
Department of Analytical Chemistry, Faculty of Science, Prado de la Magdalena, Valladolid, Spain.
Del Nozal
M A
MA
Deban
L
L
Aller
A J
AJ