Summary
Inductively coupled plasma optical emission spectroscopy (ICP-OES) was used to measure the concentrations
of cobalt, tantalum, titanium, vanadium and chromium in solutions of tungsten carbide. The main advantage
of the method described here lies in the speed, convenience and effectiveness of the dissolution procedure.
Aliquots of powdered tungsten carbide were dissolved in a solution of 5% aqua regia in 30% hydrogen
peroxide. Complete dissolution was usually achieved within 10 min. The accuracy of the method was assessed
by the analysis of certified reference materials, secondary reference materials and matrix spiking. The method
was successfully applied to commercial type samples with differing compositions. Slightly more emphasis was
placed on the measurement of vanadium, since no information on the measurement of this element in solutions
of tungsten carbide, by ICP-OES, has been published. Investigation of the interference effects of the elements in
the sample matrix on each other was essential for accurate results comparable to other published analytical
methods.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:tut/oai:encore.tut.ac.za:d1001953 |
| Date | 17 October 2003 |
| Creators | Archer, M, McCrindle, RI, Rohwer, ER |
| Publisher | The Royal Society of Chemistry |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | |
| Rights | The Royal Society of Chemistry |
Page generated in 0.0072 seconds