Preparation of an oil sample fox X-ray fluorescence analysis
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United States of America Patent
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Issued Date -
Nov 28, 2002
app pub date -
Mar 19, 2002
filing date -
Mar 30, 2001
priority date (Note) -
Abandoned
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Abstract
There is provided a method of preparing an oil sample for X-ray fluorescence analysis of the concentration of sulfur in the oil sample at a minimum limit of determination of about 10 to 30 ppb by concentrating sulfur through sedimentation or filtration. A liquid catalyst 15 from which S was removed almost completely is used, whereby S contained in an oil sample 16 is extracted, sedimented and concentrated as a silver sulfide-containing sulfur compound 18.
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