title: Determination of trace amounts of antimony by spectrofluorimetry in hydrobromic acid medium at liquid nitrogen temperature.
abstract: Trace amounts of antimony(III) may be determined in 6M hydrobromic acid by measurement of the red fluorescence of its bromide complex at -196 degrees , the optimum wavelengths of excitation and emission (360 and 586 nm respectively) being used. Calibration graphs are linear between 0.01 and 0.25 ppm. The effect of the presence of 50-fold molar amounts of 55 foreign ions has been studied. Of the ions studied, only iron(III) and tellurium(IV) interfere, and these may be tolerated at the 50- and 20-fold levels respectively. A 1000-fold molar amount of arsenic(III) causes no interference.
authors.affiliation: Chemistry Department Imperial College London, S.W.7 U.K.
authors.forename: G F
authors.initials: GF
authors.lastname: Kirkbright
authors.forename: C G
authors.initials: CG
authors.lastname: Saw
authors.forename: J V
authors.initials: JV
authors.lastname: Thompson
authors.forename: T S
authors.initials: TS
authors.lastname: West