title: Sulphate preconcentration by anion exchange resin in flow injection and its turbidimetric determination in water.
abstract: A preconcentration procedure was established for sulphate determination in rain waters at the mg/l level, employing a small column packed with the AG1-X8 (200-400 mesh) anionic resin inserted into a flow injection system. Sulphate determination was performed by using the turbidimetric method based on reaction with barium. For concentrations within 0.10 and 2.0 MgSO(2-)(4)/l, a throughput of 50 determinations/hr was achieved, and the relative standard deviation of results was better than 2%.
authors.affiliation: Departmento de Química, Universidade Federal de Sergipe, 49000 Aracajú SE, Brazil.
authors.forename: M M
authors.initials: MM
authors.lastname: Santos Filha
authors.forename: B F
authors.initials: BF
authors.lastname: Reis
authors.forename: F J
authors.initials: FJ
authors.lastname: Krug
authors.forename: C H
authors.initials: CH
authors.lastname: Collins
authors.forename: N
authors.initials: N
authors.lastname: Baccan