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Photon‐Induced x‐ray fluorescence determination of platinum in reforming catalysts and doped venezuelan laterites
Author(s) -
LaBrecque J. J.
Publication year - 1980
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300090109
Subject(s) - platinum , catalysis , doping , fluorescence , analytical chemistry (journal) , x ray fluorescence , palladium , calibration , chemistry , materials science , mineralogy , nuclear chemistry , optics , physics , optoelectronics , environmental chemistry , organic chemistry , quantum mechanics
A non‐destructive method for the determination of platinum in reforming catalysts and doped Venezuelan laterites employing a radionuclide, 8mCi of 109 Cd, and a PDP‐11/05 processor is presented. The total variation for 100s of fluorescent time is about 3% for a 10% Pt‐reforming catalyst. The total variation can be reduced to less than 1% by increasing the fluorescent time so that about 80 000 counts or greater are accumulated. The platinum was determined using the Lα and Lβ lines of platinum, as well as their sum. The different types of variation for each of these measuring parameters is given. Finally, both the calculated and measured values for the prepared calibration standards and the doped Venezuelan laterites were in excellent agreement.