title: Studies on metallochromic indicators--II. Zincon and its mercury and zinc complexes as indicators in EDTA titrations.
abstract: Zincon has been found to be an excellent indicator in the titration of mercury(II) with EDTA at pH 5.5-7. Moreover the mercury(II)-Zincon and zinc-Zincon systems have been found to be suitable indicators in the direct EDTA titrations of Pb(2+), Cd(1+) and Ca(2+). Interference studies of a number of cations and anions have been made. Chloride and bromide can be tolerated in the titration of mercury(II), up to equivalent concentrations.
authors.affiliation: Department of Chemistry, University of Rajasthan, Jaipur, India.
authors.forename: G K
authors.initials: GK
authors.lastname: Singhal
authors.forename: K N
authors.initials: KN
authors.lastname: Tandon