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Glass disk fusion method for the X-ray fluorescence analysis of rocks and silicates
(Wiley Analytical Science, 1990-08)
A study of the physical and practical aspects needed for a successful solid solution method for XRF analysis is presented in the light of the theory and practice of the glass-making industry. An inexpensive manual glass ...
Extraction of vanadium from petroleum coke samples by means of microwave wet acid digestion
(Elsevier, 1990-01)
Certified coal standards and Venezuelan petroleum coke samples were submitted to microwave acid digestion to evaluate the convenience of this procedure for the extraction of their vanadium content. The solution and the ...