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Showing 1 to 20 of 20 for “"Portable X-ray Fluorescence"”.
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Characterization of soils via portable X-ray fluorescence spectrometer
… in nature and require sample modification. Portable x-ray fluorescence (PXRF) spectrometry is a proximal sensing technique which provides elemental data in-situ, in seconds. This study examined the potential of using PXRF for soil pH and CEC prediction, using a diverse set of soil samples. …
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Measuring Trace Element Concentrations in Artiodactyl Cannonbones using Portable X-Ray Fluorescence
… nondestructive faunal analysis technique using portable X-ray fluorescence (pXRF) to measure trace element concentrations in comparative collection and archaeological bone samples. Using cannonbones from five different artiodactyl species, I collected trace element data from 50 comparative …
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Using Portable X-ray Fluorescence to Predict Physical and Chemical Properties of California Soils
… in a proximal soil sensing technique known as portable X-ray fluorescence spectrometry (pXRF). pXRF analyzers use high energy Xrays that interact with a sample to cause characteristic reflorescence that can be distinguished by the analyzer for its energy and intensity to determine the chemical …
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The Application of Machine Learning Methods to Portable X-Ray Fluorescence Data: A Case Study from Zwartfontein Farm, Northern Limb of the Bushveld Complex, South Africa
… machine learning can rapidly transform low-cost portable X-ray fluorescence (pXRF) data into interpretable geological information. The development of methods was tested, as a case study, on the Northern Limb of the Bushveld Complex of South Africa – a complex multi-commodity deposit …
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Urban park soils metals distribution in the Victoria area, British Columbia
… Victoria area were sampled and screened using a portable X-ray fluorescence (XRF) analyzer. Bioaccessibility results indicated that human health risks were acceptable at all sites. Bioaccessibility was compared to soil properties using regression. Generally, a positive correlation was discovered …
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Applicability of a delta portable XRF spectrometer for determining geochemistry of glacial sediment samples collected in the Canadian Western Arctic
… Royal Roads University's Delta Premium DP 6000 portable X-ray fluorescence spectrometer (Delta pXRF), specifically its accuracy and precision, was assessed on two certified standards for select elements. The Delta pXRF was shown to be precise for most elements. Its accuracy was shown to be …
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Chetumal's Dragonglass: Postclassic Obsidian Production and Exchange at Santa Rita Corozal, Belize
… lithic technology approach and the use of pXRF (portable X-ray fluorescence) spectrometry, it is possible to establish the sources of obsidian being exploited, the stage of reduction of obsidian imports, the major obsidian industry, and obsidian distribution for Santa Rita Corozal's Postclassic …
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Recovering Lost Information From Avocational Projectile Point Collections
… Eared (20%) projectile points. The results of portable X-ray fluorescence (pXRF) analysis identified 62 obsidian sources from the northwest Great Basin, although it was dominated by Beatys Butte obsidian. Many morphological, typological, and sourcing characteristics of the Wild/Clymer …
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Mobile Practices and the Production and Curation of Pottery: A View from the Ancient Southern Russian Steppe Using Portable Methods of Investigation
… these mobile pastoralists, this project employed portable means of investigation including low-magnification digital microscopy and portable x-ray fluorescence (pXRF). These practices were considered technical choices indicative of “communities of practice” formed within social networks …
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Technological Adaptation on the Frontier: An Examination of Blacksmithing at Fort Michilimackinac, 1715-1781
… exhibited by these repairs are identified. Portable x-ray fluorescence analysis was used to further examine traits of frontier metals and identify types of artifacts that were likely produced by the blacksmiths at Fort Michilimackinac. By examining the blacksmith and his work, this research …
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Pining for an anomaly: Biogeochemical mapping of the Cobar Basin for mineral exploration at regional to local scales.
… plasma-mass spectrometry (ICP-MS) and portable X-ray fluorescence spectrometry (pXRF). Concentrations of most elements in the needles reflect variations in underlying lithology, even in areas with alluvial cover. Concentrations of non-nutrient trace elements Au, Ag, Bi, Pb, As and W are …
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Technological Systems of Small Point Weaponry of the Postclassic Lowland Maya (A.D. 1400 - 1697)
… Additionally, instrumental methods including portable x-ray fluorescence (pXRF) and cross-over immuno-electrophoresis (CIEP) are used to identify raw material procurement patterns and interpret use activities related to the bow-and-arrow. The results of this study demonstrate that raw material …
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Leaching of metals and metalloids from highway marking glass beads and the potential environmental impact
… plasma mass spectroscopy (HF/ICP-MS), and field portable x-ray fluorescence (FP-XRF) spectroscopy. A number of leaching studies were conducted and included two standard United States Environmental Protection Agency (U.S. EPA) methods: the toxicity characteristic leaching procedure (TCLP) and the …
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Prospecting the physicochemical past. Three dimensional geochemical investigation into the use of space in Viking Age sites in southern Norway using portable XRF.
This research centres on the use of portable X-Ray fluorescence (XRF) as a tool for archaeological geochemistry. The instrument was used as part of varied contextual, vertical and horizontal sampling strategies on three Viking Age sites in southern Norway in order to investigate archaeological …
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RECONSTRUCTING PHOENICIAN POTTERY PRODUCTION IN SARDINIA: A MULTI ANALYTICAL CHARACTERIZATION OF SAMPLES FROM THE SITE OF PANI LORIGA (8-7TH CENTURY BC) AND MONTE SIRAI (6-5TH CENTURY BC)
… inclusions. Optical petrography, combined with X-ray diffraction analysis, provided insights into the mineralogical associations, firing temperatures, and rock inclusions. In the most populated groups, the presence of minerals such as quartz, plagioclases, feldspars, and hydro-silicates, …
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Fire Assay, Cupellation and the Dissemination of Technical Knowledge in Post-Medieval Europe
… The analytical techniques employed include portable X-ray fluorescence, optical microscopy, inductively coupled plasma mass spectrometry/atomic emission spectroscopy, and scanning electron microscopy with energy dispersive spectrometry. Compared with ceramic crucibles, made industrially and …
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Production and Consumption of Middle Islamic Ceramics (1000-1500 CE) in Western Asia: Regional Practices in an Interconnected World
… Hasanlu, Chal Tarkhan), and a capital city (Rayy). The majority of the assemblages are from rural sites, but a few are from non-rural sites to lend a comparative edge and help define what is and is not rural. The ceramics are analyzed using a combination of macroscopic observation, …
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Recognising cryptic alteration surrounding the Mount Isa Copper Deposits: Implications for controls on fluid flow, and mineral exploration
… information about the mineralising system. Portable X-Ray Fluorescence (pXRF) represents a tool that can be used in a more targeted approach during exploration activities. With rigorous quality assurance and control procedures, pXRF can quickly and cost-effectively collect large datasets to …