XRF ANALYSIS OF AUTOMOTIVE CATALYSTS BY FLUX/FUSION, A.R. Drews, pp. 472-477
نویسنده
چکیده
The classic approach to preparation of XRF specimens of inhomogeneous materials is the method of flux/fusion. This technique has not been applied to automotive catalysts because they utilize large quantities of precious metals (Pt, Pd, Rh) that are reduced at typical fusion temperatures and agglomerate and alloy with the crucible walls, leading to erratic losses of the precious metals. This effect is pronounced in automated fusion machines that vigorously agitate the crucible over a gas flame. In this report I describe a fusion technique that overcomes the problem of precious metal alloying and that yields good results for the broad range of elements found in modern automotive catalysts.
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