title: Arsenazo III and its analogues-VI( *) Some new photometric reagents for palladium.
abstract: Colour reactions of palladium with 2,7-bisazo derivatives of chromotropic acid, containing the o,o'-dihydroxyazo group, are characterized by high sensitivity ( = 60-82 x 10(2)) and good contrast (Deltalambda = 70-80 nm) and permit determination of palladium over a wide range of acidity (from pH 5 to 4N sulphuric acid). Many other metals, including the other platinum metals, do not interfere when present in up to 100-fold amounts.
authors.affiliation: Vernadsky Institute of Geochemistry and Analytical Chemistry, Academy of Sciences, Moscow, U.S.S.R.
authors.forename: S B
authors.initials: SB
authors.lastname: Savvin
authors.forename: R F
authors.initials: RF
authors.lastname: Propistsova
authors.forename: L A
authors.initials: LA
authors.lastname: Okhanova