PRECONCENTRATION OF TRACE AMOUNTS OF TUNGSTEN ON AMBERLITE XAD-7 FOR ITS SPECTROPHOTOMETRIC DETERMINATION IN HOT-SPRING WATER

Authors
SOYLAK M ELCI L DOGAN M
Citation
M. Soylak et al., PRECONCENTRATION OF TRACE AMOUNTS OF TUNGSTEN ON AMBERLITE XAD-7 FOR ITS SPECTROPHOTOMETRIC DETERMINATION IN HOT-SPRING WATER, Fresenius' journal of analytical chemistry, 351(2-3), 1995, pp. 308-310
Citations number
20
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
351
Issue
2-3
Year of publication
1995
Pages
308 - 310
Database
ISI
SICI code
0937-0633(1995)351:2-3<308:POTAOT>2.0.ZU;2-2
Abstract
A preconcentration procedure, using a short column loaded with Amberli te XAD-7, is proposed for the spectrophotometric determination of trac es of tungsten. The procedure is based on the retention of tungsten on the resin after its reduction to a W(V)-thiocyanate complex with tin( II) chloride solution. Interference effects have been shown to be negl ible for foreign ions including Ca2+, Mg2+, Na+, SO42-, F-, NO3-, Cu2, Fe3+ and Mo6+ The procedure has been applied to hot spring water wit h satisfactory results (Recovery > 95%; relative standard deviation < 5%; relative error < 3%).