title: spectroscopy in separated flames-VI The argon or nitrogen-sheathed nitrous oxide-acetylene flame in atomic-absorption spectroscopy.
abstract: The separation of the premixed nitrous oxide-acetylene flame at a 50-mm slot burner by sheathing with argon or nitrogen is described. In comparison with the conventional flame, the interconal zone of the hot, slightly fuel-rich separated flames provides better conditions for the maintenance of free atoms of elements which form refractory oxides. Optimum conditions for the determination by atomic-absorption spectroscopy of the elements Al, Be, Ge, Mo, Si, Ti, V and Zr in both separated and conventional flames at the same burner have been established. Significant improvement in detection limits and sensitivities is obtained in the separated flames.
authors.affiliation: Chemistry Department, Imperial College, London S.W.7. UK.
authors.forename: G F
authors.initials: GF
authors.lastname: Kirkbright
authors.forename: M
authors.initials: M
authors.lastname: Sargent
authors.forename: T S
authors.initials: TS
authors.lastname: West