Results 251 to 260 of about 36,967 (295)

Advances in Portable X-ray Fluorescence Spectrometry

2022
Over the last two decades, advances in the design, miniaturization, and analytical capabilities of portable X-ray fluorescence (pXRF) instrumentation have led to its rapid and widespread adoption in a remarkably diverse range of applications in research and industrial fields.
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Recent Advances in Portable X‐Ray Fluorescence Spectrometry

Applied Spectroscopy Reviews, 2004
Abstract X‐ray fluorescence (XRF) spectrometry is a nondestructive, rapid, simultaneous multi‐element analytical methodology for solid or liquid samples. Its applications are broad and XRF spectra cover most elements, with a dynamic range from 100% down to the µg/g level.
Xiandeng Hou, Yihua He, Bradley T. Jones
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Compost salinity assessment via portable X-ray fluorescence (PXRF) spectrometry

Waste Management, 2018
Compost salinity is an ongoing concern for compost producers, especially with certain feedstocks and in arid or semiarid regions. Current testing protocols call for sampling and testing ex-situ via 1:5 (w/v) slurries via electrical conductance. For this research an alternate approach has been proposed, the use of portable X-ray fluorescence (PXRF ...
David C, Weindorf, Somsubhra, Chakraborty, Bin, Li, Sanjit, Deb, Atinderpal, Singh, Nana Y, Kusi   +5 more
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Portable X-ray fluorescence for bone lead measurements of Australian eagles

Science of The Total Environment, 2021
Lead (Pb) toxicity from ammunition has been shown to be a threat to scavenging birds across the globe. Toxic levels of lead have recently been found in Australia's largest bird of prey, the wedge-tailed eagle (Aquila audax), through inductively coupled plasma mass spectrometry (ICP-MS) analysis of liver and bone samples. However, ICP-MS is consumptive (
Hampton, J.O., Specht, A.J., Pay, J.M., Pokras, M.A., Bengsen, A.J.   +4 more
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Soil Salinity Measurement Via Portable X-ray Fluorescence Spectrometry

Soil Science, 2014
Saline soils are defined as those containing appreciable salts more soluble than gypsum (e.g., various combinations of Na, Mg, Ca, K, Cl, SO4, HCO3, and CO3). Saline soils can occur across diverse climates and geological settings. As such, salinity is not germane to specific soil textures or parent materials.
Samantha Swanhart, David C. Weindorf, Somsubhra Chakraborty, Noura Bakr, Yuanda Zhu, Courtney Nelson, Kayla Shook, Autumn Acree   +7 more
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Portable X-Ray Fluorescence Analysis of Rock Art Pigments

Plains Anthropologist, 2005
Portable x-ray fluorescence technology has proved to be a very useful tool for identifying the mineral constituents of rock art paintings. This paper describes its use to identify chromium, whose likely source was the mineral fuchsite, as the green coloring agent in Montana and Wyoming pictographs.
Bonita Newman, Lawrence Loendorf
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Portable X-ray Fluorescence Spectrometry

2008
Portable X-ray fluorescence (PXRF) instrumentation has some unique analytical capabilities for the in situ analysis of samples in the field. These capabilities have been extended in recent years by the continuing development of solid state detectors, surface mounted electronics, digital signal processing technology, Li-ion batteries combined with a ...
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Enhanced Pedon Horizonation Using Portable X-ray Fluorescence Spectrometry

Soil Science Society of America Journal, 2012
Soil pedons are commonly differentiated into a succession of horizons based on observable differences in soil color, texture, structure, or other characteristics, which are essentially associated with or determined by the chemical composition of soil materials.
David C. Weindorf, Yuanda Zhu, Beatrix Haggard, Josh Lofton, Somsubhra Chakraborty, Noura Bakr, Wentai Zhang, Walker C. Weindorf, Mary Legoria   +8 more
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Metals Analysis of Agricultural Soils via Portable X-ray Fluorescence Spectrometry

Bulletin of Environmental Contamination and Toxicology, 2014
To assess the applicability of portable X-ray fluorescence (PXRF) spectrometry for metals analysis, total concentrations of As, Pb, Cu, and Zn in 47 agricultural soils were determined using in situ PXRF analysis, ex situ PXRF analysis, and conventional laboratory analysis. The correlation regression parameters of PXRF data with the data of conventional
Wenyou, Hu, Biao, Huang, David C, Weindorf, Yong, Chen   +3 more
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Handheld Portable Energy-Dispersive X-Ray Fluorescence Spectrometry (pXRF)

2016
Handheld portable energy-dispersive X-ray fluorescence (pXRF) spectrometry is used for non-destructive chemical characterization of archaeological ceramics. Portable XRF can provide adequate analytical sensitivity to discriminate geochemically distinct ceramic pastes, and to identify compositional clusters that correlate with data patterns acquired by ...
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