title: Spectroscopy in separated flames--VII: Determination of bismuth by atomic-fluorescence spectroscopy in a separated air-acetylene flame with electronically modulated electrodeless discharge tube sources.
abstract: The application of electronically modulated and unmodulated bismuth and iodine electrodeless discharge lamps as sources for the excitation of bismuth atomic fluorescence in conventional and nitrogen-separated air-acetylene flames has been investigated. Separation of the flame results in improved detection limits for bismuth even when a modulated source is employed. The effect of 500-fold weight excesses of foreign ions on the determination of bismuth at 302.46 nm with a modulated iodine source and separated flame has been studied; only calcium and zirconium are found to cause significant interference. The determination of bismuth in aluminium alloy samples is reported.
authors.affiliation: Chemistry Dept., Imperial College, London S.W.7., U.K.
authors.forename: R S
authors.initials: RS
authors.lastname: Hobbs
authors.forename: G F
authors.initials: GF
authors.lastname: Kirkbright
authors.forename: T S
authors.initials: TS
authors.lastname: West