Nondispersive soft x-ray fluorescence spectrometer for quantitative analysis of the major elements in rocks and minerals

Abstract

A lithium drifted silicon detector and a multichannel analyzer system have been combined with a multiple anode soft X-ray generator and a high vacuum sample handling system to provide an X-ray fluorescence unit for quantitative analyses of the elements from oxygen to iron. A relatively rapid, accurate, and reproduceable sample preparation technique and a method for sample matrix absorption corrections are described.

Petrology and radiogeology of the Stripa pluton

“…This discrepancy, as well as others in these analyses, may be due to heterogeneity of the sampled outcrops}. These whole rock chemical analyses were obtained at LBL on a multiple anode soft X-ray fluorescence spectrometer (Hebert and Street, 1973). The sample was first ground to a fine powder, then fused with a LiB02 flux and poured to form a glass disc.…”

Geothermal resource assessment of Mount Hood. Final report

“…Neutron activation and X-ray fluorescence techniques for analysis of rock samples have been described, respectively, by Perlman and Asaro (1969) and Hebert and Street (1974). Crushed rock samples were pulverized and powders pelletized for reactor irradiation, and fused with lithium borate into glass discs for X-ray fluorescence.…”

Neurotoxins of Bungarus multicinctus venom purification and partial characterization

“…Total sulfur content of the protein samples was determined with a recently described non-dispersive vacuum soft X-ray fluorescence spectrometel' (Hebert and Street, 1974). The spectrometer features 6 anodes which provide characteristic.…”