title: Carminic acid as a reagent for the spectrofluorimetric determination of molybdenum and tungsten-I Development of procedures.
abstract: Carminic acid forms red fluorescent complexes with molybdenum(VI) and tungsten(VI) which provide spectrofluorimetric methods for the determination of these metals in the range 0.1-0.9 ppm and 0.4-0.36 ppm at pH 5.2 and 4.6 respectively. The optimum conditions for the analytical procedures have been established, and the effects of a wide range of cations and anions have been investigated. The reagent forms 1:1 complexes with both molybdenum and tungsten, and the conditional stability constants have been evaluated.
authors.affiliation: Department of Chemistry, Imperial College, London S.W.7 UK.
authors.forename: G F
authors.initials: GF
authors.lastname: Kirkbright
authors.forename: T S
authors.initials: TS
authors.lastname: West
authors.forename: C
authors.initials: C
authors.lastname: Woodward