title: A new electrochemical method based on transfer at a liquid/liquid interface: Determination of barium and strontium.
abstract: A new kind of polyoxyethylene ionophore is introduced to facilitate metal ion transfer across a liquid/liquid interface. The transfer of Ba(2+) and Sr(2+), facilitated by polyethylene glycol 400 across the interfaces of water/nitrobenzene and water/1,2-dichloroethane, has been studied in detail by cyclic voltammetry, and a new method for the determination of barium and strontium established. Both metals can be determined by cyclic voltammetry with good selectivity and reproducibility.
authors.affiliation: Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130021, People's Republic of China.
authors.forename: Z
authors.initials: Z
authors.lastname: Sun
authors.forename: E
authors.initials: E
authors.lastname: Wang