Determination of tungsten by acidimetric titration.
A new method is described for the acidimetrie titration of tungstate, based on the reaction (x)WO(4)(2-) + xH(+) + mannitol = complex. Quantities of tungsten greater than 2.5 mmole may be determined with a relative standard deviation of not more than 0.1 %. The method is subject to interference by any species in the tungstate solution which absorbs protons in the pH range 5.5-8.5.
Sinclair
A G
AG
Grimsby College of Technology Nuns' Corner Grimsby, Lincolnshire England.