Results 281 to 290 of about 152,477 (353)
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X-ray fluorescence spectrometry in the mining industry
1991A change from conventional wet chemical analysis to the non-destructive x-ray fluorescence spectrometry method in the nickel mining and processing industry is described, highlighting speed, cost and scope advantages. Problems encountered with respect to reference standards acquisition, calibration and manpower training are also highlighted.
E. Chikukwa, L. Akino
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Portable X‐ray fluorescence spectrometry analysis of soils
Soil Science Society of America Journal, 2020AbstractPortable X‐ray fluorescence (PXRF) spectrometry is a proximal sensing technique whereby low‐power X‐rays are used to make elemental determinations in soils. The technique is rapid, portable, and provides multi‐elemental analysis with results generally comparable to traditional laboratory‐based techniques.
David C. Weindorf, Somsubhra Chakraborty
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, 2016
A simple and effective speciation procedure for the determination of inorganic chromium species in water samples was developed. The method is based on the combination of dispersive micro solid-phase extraction (DMSPE) and energy dispersive X-ray ...
K. Pytlakowska
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A simple and effective speciation procedure for the determination of inorganic chromium species in water samples was developed. The method is based on the combination of dispersive micro solid-phase extraction (DMSPE) and energy dispersive X-ray ...
K. Pytlakowska
semanticscholar +1 more source
Quantification in grazing-emission X-ray fluorescence spectrometry
Spectrochimica Acta Part B: Atomic Spectroscopy, 1999Abstract In grazing-emission X-ray fluorescence (GEXRF) spectrometry wavelength-dispersive detection can be applied. Much softer radiation and hence lighter elements than in total-reflection X-ray (TXRF) spectrometry can thus be detected. We used simulations to investigate methods of quantification of GEXRF results involving soft characteristic ...
Spolnik, Zoya +4 more
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The Determination of Thorium in Monazite by Fluorescent X-Ray Spectrometry
Advances in X-ray Analysis, 1963AbstractA method is presented for the quantitative determination of thorium in monazite by fluorescent X-ray speetrometry. Strontium is used as an internal standard, and sample preparation consists of mechanically blending the finelyground (325-mesh) sample with reagent grade strontium carbonate.
M. M. English, M. C. Farquhar
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Signal‐to‐noise ratios in forensic glass analysis by micro X‐ray fluorescence spectrometry
, 2014Micro X-ray fluorescence (μ-XRF) spectrometry using an energy dispersive X-ray (EDS) detector is capable of detecting certain major, minor, and trace elements that permit potential discrimination of glass fragments in forensic cases on the basis of ...
Troy Ernst +10 more
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Instrumentation for Total Reflection Fluorescent X-Ray Spectrometry
Advances in X-ray Analysis, 1991AbstractThis article describes the instrumentation for a total reflection fluorescent x-ray spectrometer. The reflecting intensity and the angular divergence were studied with respect to various kinds of monochromators. Using silicon wafers, the angular divergence effect of the incident beam, surface roughness influences and the smoothing of background
Tomoya Arai, Tadashi Utaka
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Spectrometry of the photon beam from an X-ray tube by X-ray fluorescence
Nuclear Instruments and Methods in Physics Research, 1984Abstract A method to perform the measurement of photon beam spectra from X-ray tubes is described. It consists of exciting the fluorescence of elements with their K-binding energies lying within the energetic range of the bremsstrahlung spectrum, using the tube photon beam, and a 241 Am excitation source as a reference, to normalize individual ...
A. López-Fraguas +4 more
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, 2015
Technology development over the last few years has led to significant improvements in the quality and flexibility of portable instruments. Notably, handheld energy-dispersive X-ray fluorescence (ED-XRF) spectrometry has seen a bloom both in terms of ...
J. Quye‐Sawyer +2 more
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Technology development over the last few years has led to significant improvements in the quality and flexibility of portable instruments. Notably, handheld energy-dispersive X-ray fluorescence (ED-XRF) spectrometry has seen a bloom both in terms of ...
J. Quye‐Sawyer +2 more
semanticscholar +1 more source