Fluorescent X-Ray Spectroscopy

Quantitative Analysis of Niobium and Tantalum in Ores by Fluorescent X-Ray Spectroscopy

“…Its intensity can be measured either by a mechanical register or by recording the output on a chart record. Two papers by Friedman and Birks (6,9) present an excellent introduction to instrumentation of the fluorescent x-ray spectrograph. Fluorescent x-ray spectrographs capable of recording two or more wave lengths simultaneously have been described by Adler and Axelrod (1) and by Gillam and Heal {10).…”

X-Ray Absorption and Emission

“…The earlier history is given by von Hevesy (65). Recent reviews by members of the Naval Research Laboratory (19,53), w-here the method has been under investigation for more than 5 y-ears, are excellent summaries of recent progress, w-hich makes it possible to concentrate on general observations here.…”

“…The first procedure is safest when high precision is needed, but it is the most troublesome; the second is a welcome way of reducing the number of standards necessary; the third can probably cope with the first two causes of the previous paragraph but usually requires an arbitrary assumption in case of the third. Resolution (19,22,26,53). This highly technical subject will be dismissed with the following general observation.…”

“…83, 90) and of metal compounds added to lubricating oils (36). Data are also available for iron in blood and for uranium in aqueous solution (19). Trace determinations in minerals are covered in references already given (29.…”

Plant Analyses, Analysis of Dried Plant Material by X-Ray Emission Spectrograph

“…Recent reviews have pointed to the . increasing use of the x-ray emission spectrograph as an analytical tool in the fields of metallurgy, ore and mineral analysis, petroleum technology, quality control, and, to a limited extent, in biological assays (2,9,10). The simplicity of the spectra and the relative ease with which determinations of certain elements can be made suggest its application to the analysis of plant material.…”