title: Flow injection spectrophotometry coupled with a crushed barium sulfate reactor column for the determination of sulfate ion in water samples.
abstract: A new type of a reactor column, a crushed BaSO(4) reactor column used for the flow injection spectrophotometric determination of sulfate ion using the exchange reaction of sulfate ion and barium-dimethylsulfonazo III is proposed. The column is very simple and economical. It can be continuously used for 8h before washing with water for repeated usage of at least 1 month. The procedure is sensitive. Application to various water samples was demonstrated.
authors.affiliation: Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
authors.forename: Rodjana
authors.initials: R
authors.lastname: Burakham
authors.forename: Keiro
authors.initials: K
authors.lastname: Higuchi
authors.forename: Mitsuko
authors.initials: M
authors.lastname: Oshima
authors.forename: Kate
authors.initials: K
authors.lastname: Grudpan
authors.forename: Shoji
authors.initials: S
authors.lastname: Motomizu