title: Ion-exchange behavior of stannic selenoiodate and stannic selenosilicate: analytical application of stannic selenoiodate.
abstract: Two new inorganic ion exchangers, stannic selenoiodate and stannic selenosilicate have been synthesized. The ion-exchange capacity of stannic selenoiodate and stannic selenosilicate for K+ was found to be 1.84 and 1.23 meq g(-1), respectively. pH titration studies reveal monofunctional and bifunctional behavior for stannic selenosilicate and stannic selenoiodate, respectively. Distribution coefficients of metal ions in dimethylformamide-HCl and formamide-HCl systems have been determined. Some important and analytically difficult quantitative binary and ternary separations, and selective separations of Ag+, Sn4+, Zr4+, Co2+, and Ni2+ have been achieved on stannic selenoiodate columns. The practical utility of the material has been demonstrated by analyzing the metal ion content of electroplating waste.
authors.affiliation: Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India. rosaindica2001@yahoo.com
authors.forename: Syed Ashfaq
authors.initials: SA
authors.lastname: Nabi
authors.forename: Amjad Mumtaz
authors.initials: AM
authors.lastname: Khan