Results 11 to 20 of about 112,596 (333)
X-ray fluorescence spectrometry at GGU
Rapport Grønlands Geologiske Undersøgelse, 1975 In 1971 GGU started to establish a modern laboratory for rock analysis based on X-ray fiuorescence spectrometry and a manual Siemens SRS sequence spectrometer, prepared for automation, was bought. It is difficult to imagine a modern X-ray spectrometer without automatic preselection of measuring parameters but the automation can be present in varying ...
Ian Sorensen
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Геодинамика и тектонофизика, 2022 Unlike conventional X-ray fluorescence spectrometry, the total-reflection X-ray fluorescence spectrometry is not a widespread and routine method for analyzing solid samples with mineral matrix, but it has a great potential for geochemical, geological ...
A. S. Maltsev, G. V. Pashkova
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Auto-Encoder Neural Network Incorporating X-Ray Fluorescence Fundamental Parameters with Machine Learning [PDF]
, 2022 We consider energy-dispersive X-ray Fluorescence (EDXRF) applications where the fundamental parameters method is impractical such as when instrument parameters are unavailable. For example, on a mining shovel or conveyor belt, rocks are constantly moving (leading to varying angles of incidence and distances) and there may be other factors not accounted
arxiv +1 more source
Determination of Manganese Content in Soils and Sediments by X-ray Fluorescence Spectrometry
Yankuang ceshi, 2020 OBJECTIVES Due to the advantages of simple sample preparation, non-destructive determination, and rapid detection, the X-ray fluorescence spectrometry technique has become a robust method for determination of manganese in soil or sediment.
CHEN Chun-fei +7 more
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Fossil and present-day stromatolite ooids contain a meteoritic polymer of glycine and iron [PDF]
International Journal of Astrobiology 2024, 2023 Hemoglycin, a space polymer of glycine and iron, has been identified in the carbonaceous chondritic meteorites Allende, Acfer 086, Kaba, Sutters Mill and Orgueil. Its core form has a mass of 1494Da and is basically an antiparallel pair of polyglycine strands linked at each end by an iron atom. The polymer forms two- and three- dimensional lattices with
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Accurate experimental determination of Gallium K- and L3-shell XRF fundamental parameters [PDF]
JAAS, 2018, DOI: 10.1039/C8JA00046H, 2018 The fluorescence yield of the K- and L3-shell of gallium was determined using the radiometrically calibrated (reference-free) X-ray fluorescence instrumentation at the BESSY II synchrotron radiation facility. Simultaneous transmission and fluorescence signals from GaSe foils were obtained, resulting in K- and L3-shell fluorescence yield values ...
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Yankuang ceshi, 2015 Basalt identification is usually performed by microscope, so the appraisal results are easily influenced by personal professional level and subjective factors.
XU Nai-cen, SHEN Jia-lin, ZHANG Jing
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The origin and chronology of medieval silver coins based on the analysis of chemical composition
Nukleonika, 2015 Medieval Central Europe coins - the Saxon coins, also called as the Otto and Adelheid denarii, as well as the Polish ones, the Władysław Herman and Bolesław Śmiały coins - were examined to determine their provenance and dating.
Pańczyk Ewa +5 more
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Application Skills on Determination of Geological Sample by X-ray Fluorescence Spectrometry
Yankuang ceshi, 2015 X-ray Fluorescence Spectrometry (XRF) has such advantages as simple sample preparation, green environmental protection and the simultaneous determination of multiple elements and is widely used in the exploration geochemistry analysis field.
CHEN Jing +4 more
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Prospects in Analytical Atomic Spectrometry [PDF]
Russian Chemical Reviews, v. 75, pp. 289-302 (2006). [Translated
from Uspekhi Khimii, v. 75, pp. 322-338 (2006)], 2006 Tendencies in five main branches of atomic spectrometry (absorption, emission, mass, fluorescence and ionization spectrometry) are considered. The first three techniques are the most widespread and universal, with the best sensitivity attributed to atomic mass spectrometry.
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