Results 251 to 260 of about 6,817,059 (287)

Evaluation of Portable X-ray Fluorescence for Gypsum Quantification in Soils

Soil Science, 2009
The use of field portable X-ray fluorescence (XRF) spectrometry as a quantification tool for gypsum content in soils of West Texas and southern New Mexico, USA, was evaluated. Six sites were evaluated with gypsum contents ranging from less than 10% to greater than 90%.
Weindorf, David C., Zhu, Yuanda, Ferrell, Ray, Rolong, Nelson A., Barnet, Tom, Allen, Brett L., Herrero Isern, Juan, Hudnall, Wayne H.   +7 more
openaire   +2 more sources

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.
openaire   +1 more source

Portable X-ray fluorescence single element analyzer

Nuclear Instruments and Methods, 1973
Abstract A portable, battery powered X-ray fluorescence analyzer sensitive to a given element within an unknown sample, has been fabricated and tested. The device utilizes an X-ray tube source, balanced filters, dual NaI(Tl) counters, and the electronics necessary to provide instant readout of the presence and abundance of the element in question ...
J.H. McCrary, C.M. Edmonds
openaire   +1 more source

SOAViz: Visualization for Portable X-ray Fluorescence Soil Profiles

2019
33
Vung Pham, Tommy Dang
openaire   +2 more sources

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 ...
openaire   +1 more source

Portable x-ray fluorescence for the analysis of chromium in nail and nail clippings

Applied Radiation and Isotopes, 2017
Assessment of chromium content in human nail or nail clippings could serve as an effective biomarker of chromium status. The feasibility of a new portable x-ray fluorescence (XRF) approach to chromium measurement was investigated through analysis of nail and nail clipping phantoms.
David E B, Fleming, Chris S, Ware
openaire   +2 more sources

A portable instrument for energy-dispersive X-ray fluorescence analysis of sulfur

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1997
Abstract A simple and portable instrument was constructed, based on the energy-dispersive X-ray fluorescence, for the analysis in situ of sulfur in lapideous materials such as frescoes and stone monuments. Sulfur is generally an index of pollution, and the detection of sulfur is of great importance. The instrument for sulfur analysis is characterized
CASTELLANO, Alfredo, R. CESAREO
openaire   +2 more sources

Portable X-ray fluorescence system to measure Th and U concentrations

Journal of Environmental Radioactivity, 2018
This study reports the results obtained in the analysis of waste material samples generated by the industries of phosphate fertilizers, in particular, the use of specific filters in a portable X-ray fluorescence system, a simple equipment allowing the characterization, identification and quantification of low concentrations of Th and U (ppm).
Marcilei A, Guazzelli da Silveira, Bruno Ribeiro, Pereira, Nilberto H, Medina, Marcia A, Rizzutto   +3 more
openaire   +2 more sources

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
openaire   +1 more source

A portable X-ray fluorescence spectrometer for the analysis of art objects

2005
A field-portable X-ray fluorescence (XRF) analyzer was developed and assembled at the Academy of Fine Arts in Vienna in order to enable in-situ examinations in the field of archaeometry. The system is based on energy dispersive XRF using a 50 W X-ray tube of Oxford, type XTF5011, a silicon drift detector (SDD) of Röntec, type XFlash 1000, and two ...
Desnica, Vladan, Schreiner, Manfred
openaire   +3 more sources