Large grain size yellow tungsten oxide is tungsten trioxide with large grain size. Large grain size tungsten trioxide’s detection is mainly detecting its impurity content, apparent density and particle size. Apparent density is available by using apparent density meter. The particle size is measured with particle size analyzer.
Detecting Impurity Content of Yellow Tungsten Oxide
Dissolve yellow tungsten oxide in ammonia, and dilute the obtained solution with deionized water, then mix. Detect blank solution, yellow tungsten oxide ammonia solution and standard solution of impurities dissolved in HCL solution by inductively coupled plasma spectrometer, and get impurity content.
Testing Principle of Inductively Coupled Plasma Spectrometer
If the aerosol samples go into the plasma flame, the vast majority of them are immediately decomposed into excited atoms and ions states. If these excited particles back to a stable ground state, they will release some energy. The specific spectral line and strength of each element to be tested, and compared with the standard solution, then the types and contents of elements contained in the sample can be obtained.
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