The diminution of sulphur contamination of powder specimens in X-ray fluorescence analysis
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 94 (1122) , 780-781
- https://doi.org/10.1039/an9699400780
Abstract
The determination of light elements by X-ray fluorescence spectrometry requires minimal absorption in the X-ray path. This is usually achieved by evacuation of the spectrometer with a rotary vacuum pump. Backstreaming of vapours from rotary vacuum pump oils causes contamination by the absorption of sulphur-containing compounds by the surface of powder specimens. A method is described for greatly decreasing this contamination by preparing powder specimens with a thin plastic film over the surface to be analysed.Keywords
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