ELIMINATION OF SULFATE INTERFERENCES IN THE CHROMATOGRAPHIC DETERMINATION OF O-PHOSPHATE USING LIQUID-LIQUID-EXTRACTION

Authors
MATTUSCH J WENNRICH R
Citation
J. Mattusch et R. Wennrich, ELIMINATION OF SULFATE INTERFERENCES IN THE CHROMATOGRAPHIC DETERMINATION OF O-PHOSPHATE USING LIQUID-LIQUID-EXTRACTION, Fresenius' journal of analytical chemistry, 356(5), 1996, pp. 335-338
Citations number
10
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
356
Issue
5
Year of publication
1996
Pages
335 - 338
Database
ISI
SICI code
0937-0633(1996)356:5<335:EOSIIT>2.0.ZU;2-I
Abstract
A liquid-liquid extraction procedure for the elimination of high level s of sulfate is described. The proposed method allows the ion-chromato graphic determination of ppb concentrations of phosphate in the presen ce of a 20000-fold excess of sulfate. The liquid anion exchange resin Amberlite LA-2 was selected to retain sulfate from the sample solution acidified by acetic acid as well as cation-exchange cartridges in the H-form. The detection limit for phosphate was 0.03 mg/L.