Results 1 to 10 of about 7,349 (250)
Calcium element quantification model using a portable X-ray fluorescence unit [PDF]
MethodsX, 2023 A methodology is proposed to achieve an effective quantification of the element Calcium in soil samples, using a portable X-ray Fluorescence (pXRF) equipment. The protocol began by preparing two ideal matrices using an increasing mass, measured on an analytical balance, of Calcium and Sodium Nitrate as binder. It is the Gravimetric technique.
Claudio H. González-Rojas +3 more
doaj +5 more sources
A Dosimetry Study of Portable X-ray Fluorescence in Vivo Metal Measurements [PDF]
Health Physics, 2019 Abstract Portable x-ray fluorescence devices have grown in popularity for possible metal exposure assessment using in vivo measurements of bone and toenail. These measurements are accompanied by a small radiation dose, which is typically assessed by radiation safety committees to be minimal.
Aaron J, Specht +5 more
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Portable X‐Ray Fluorescence Spectroscopy as a Tool for Cyclostratigraphy [PDF]
Geochemistry, Geophysics, Geosystems, 2019 AbstractCyclostratigraphic studies are used to create relative and high‐resolution time scales for sedimentary successions based on identification of regular cycles in climate proxy data. This method typically requires the construction of long, high‐resolution data sets.
Matthew Saker‐Clark +2 more
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Efficiency of Portable X-ray Fluorescence for Distinguishing Lead Slag
Applied Spectroscopy, 2023 In the Minier Valley (France, Aveyron), an archaeological site excavation has led to the discovery of 25 kg of lead (Pb) slag, found in a secondary position. On a macroscopic level, these slags can be classified into two distinct categories, vitreous black and porous gray.
Tomczyk, Céline +1 more
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Portable x-ray fluorescence spectrometer for coating thickness measurement [PDF]
Review of Scientific Instruments, 2007 A handheld x-ray spectrometer has been realized and tested. The purpose of the device is to measure the thickness of coated samples in the range of 1–1500nm in an industrial environment. Accuracy of ∼3% has been achieved in this range with a measurement time of 1min.
Carapelle, Alain +4 more
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Portable X-ray fluorescence for the detection of POP-BFRs in waste plastics [PDF]
Science of The Total Environment, 2018 The purpose of this study was to establish the efficacy of portable X-ray fluorescence (XRF) instrumentation as a screening tool for a variety of end of life plastics which may contain excess amounts of brominated flame retardants (BFRs), in compliance with European Union (EU) and United Nations Environment Programme (UNEP) legislative limits (low POP ...
Martin Sharkey +4 more
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Portable X-ray fluorescence spectrometer with an electric battery
BUNSEKI KAGAKU, 2004 A potable X-ray fluorescence spectrometer composed of an electric battery X-ray generator and a silicon drift detector was made. Several kinds of samples, including toxic elements, such as lead and cadmium, were measured in air using this spectrometer. A possibility to analyze these toxic elements is discussed.
Kawai, J, Yamada, T, Fujimura, H
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Portable X-ray fluorescence of zinc applied to human toenail clippings
Journal of Trace Elements in Medicine and Biology, 2020 Zinc is an essential trace element in humans. Zinc deficiency can result in a range of serious medical conditions which include effects on growth and development, the immune system, the central nervous system, and the gastrointestinal system. Diagnosis of zinc deficiency is often precluded by the lack of a noninvasive and reliable biomarker.
David E.B. Fleming +10 more
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Water analysis via portable X-ray fluorescence spectrometry [PDF]
Journal of Hydrology, 2017 Abstract Rapid, in-situ elemental water analysis would be an invaluable tool in studying polluted and/or salt-impacted waters. Analysis of water salinity has commonly used electrical conductance (EC); however, the identity of the elements responsible for the salinity are not revealed using EC.
Delaina Pearson +7 more
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Performance indicators for portable X-ray fluorescence devices
Acta IMEKOThe invention of hand-held X-ray fluorescence devices (HH-XRF) has revolutionized the way we analyse ancient materials. These devices are equipped with highly miniaturized hardware and advanced software, which encourages users to consider them as black boxes. This enables archaeologists, art historians, and restorers to be self-sufficient in performing
Konstantakopoulou E. +4 more
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