ISSN:
0049-8246
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
The characteristics of commonly used trace element excitation methods are compared. Detection limits measured on four different instruments show that 15 kV broadband excitation is optimum for light element excitation, while monochromatic excitation is best for the 5-30 keV energy range. For simultaneous analysis of a wide range of elements, 50 kV broadband excitation is superior to monochromatic excitation.Three different monochromatic excitation methods were studied: the regenerative monochromator filter, the secondary fluorescer and the graphite monochromator. All three methods yielded approximately the same detection limits in the 5-30 keV range, with the Si(Li) X-ray spectrometer performance being the limiting factor.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/xrs.1300060108
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