title: [Determination of trace silver in surface water samples by flame atomic absorption with continuous flow on-line absorption preconcentration].
abstract: In a continuous flow on-line preconcentration system, trace silver was adsorbed onto activated carbon particles packed in micro colum at pH 1, eluted with 0.3 ml of 10 g/L Na2S2O3 solution and determined by flame atomic absorption spectrometry. For surface water samples, 25 ml sufficed precise determination of silver at level of microgram/L. The relative standard deviation of 10 parallel sample determinations was 6.9%. The proposed method was successfully applied to water samples with recoveries ranging from 93.2% to 104.6% and a throughout of 7-8 sampling/h.
authors.forename: K
authors.initials: K
authors.lastname: Zhang
authors.forename: C
authors.initials: C
authors.lastname: Li
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: He
authors.forename: H
authors.initials: H
authors.lastname: Fan
mesh_terms: D012834:Silver / Q000032:analysis*; D013054:Spectrophotometry, Atomic / Q000379:methods; D014881:Water Supply
chemical_list: D012834:Silver