Results 201 to 210 of about 2,567 (243)

Optimizing pXRF sample preparation for in situ soil screening: A regulatory framework perspective.

Journal of Environmental Quality
This study evaluates the impact of sample preparation methods on the accuracy and precision of portable X-ray fluorescence (pXRF) measurements for trace metals in urban soils in Hartford, CT, in the context of residential regulatory thresholds.
Hayley Clos, Marisa Chrysochoou
semanticscholar   +1 more source

Surface reflectance and pXRF for assessing soil weathering indexes

Journal of South American Earth Sciences, 2022
The use of satellite images is a widespread technique for estimating soil attributes. However, what is the potential of satellite data on the prediction of soil weathering indices? How much in their performance is affected by spectral mixing and data resolution? There is no consensus for answering these questions.
Souza, Arnaldo Barros e, Di Raimo, Luis Augusto Di Loreto, Mello, Danilo César de, Guimarães, Clecia Cristina B., Urbina-Salazar, Diego F., Silva, Sérgio Henrique Godinho, Curi, Nilton, Demattê, José A. M.   +7 more
openaire   +2 more sources

Investigation the Ubaid Pottery From Kendale Hecala, Türkiye Using pXRF, XRD, FT‐IR and SEM‐EDS

X-Ray Spectrometry
Ubaid ware, a hallmark of early cultural interaction across Mesopotamia, has been well studied, but its technological properties remain underexplored in the Upper Tigris region.
Kübra Coşkun, Üftade Muşkara
semanticscholar   +1 more source

Characterization of New Zealand obsidian using PXRF

Journal of Archaeological Science, 2011
Abstract New Zealand has some of the most active areas of rhyolitic volcanism in the world and this has produced numerous obsidian sources in the northern half of the North Island. In total archaeologists have recognized 27 named locations from which obsidian can be obtained scattered across 4 geological source regions.
Sheppard, Peter J, Irwin, Geoff J, Lin, Sam C, Mccaffrey, Cameron P   +3 more
openaire   +2 more sources

pXRF: a study of inter-instrument performance

Journal of Archaeological Science, 2012
Abstract Integrating portable X-ray fluorescence (pXRF) instrumentation into archaeological investigations has generated as much interest as skepticism because several characteristics of the technique limit analytical accuracy and precision. This paper seeks to explore inter-instrument performance in order to assess the potential pXRF instrumentation
Nathan Goodale, David G. Bailey, George T. Jones, Catherine Prescott, Elizabeth Scholz, Nick Stagliano, Chelsea Lewis   +6 more
openaire   +1 more source

Enkomi (Cyprus): Using pXRF spectroscopy to identify LBA copper alloys

Journal of Archaeological Science: Reports, 2021
Abstract A collection of 206 copper-base artefacts coming from the Late Bronze Age settlement of Enkomi, located on the east coast of Cyprus, and dated to the 16th-11th centuries BC, was studied and non-destructively chemically analysed using a handheld pXRF instrument. The assemblage consists of various categories of objects, such as weapons, tools,
Andreas Charalambous, George Papasavvas, Vasiliki Kassianidou   +2 more
openaire   +1 more source

Forensic Characterization of Nacre (Mother of Pearl) by pXRF and DRIFTS Analysis

International Journal of Forensic Sciences
This study aimed to develop non-destructive methodology to distinguish natural nacre (Mother of Pearl) from synthetic imitations, a task of growing importance due to increased demand and illegal trade. The research employed two key analytical techniques:
Nasiatka K, McClure P, Espinoza E
semanticscholar   +1 more source

Non-Invasive Study of Gold Nanoparticles in Famille rose and Ruby-Back Qing Porcelain by Luminescence, Low-Wavenumber Raman Scattering and pXRF

Applied Sciences
Comprehensive studies of Famille rose porcelains, particularly ruby-back pieces, are rare and have generally not addressed the vibrational signatures arising from gold nanoparticles.
Philippe Colomban, Hui Tang, Gulsu Simsek-Franci   +2 more
semanticscholar   +1 more source

Applicability of ICP-MS/AES, γ-ray and portable X-ray spectrometry (pXRF) data for rock-generated radiogenic heat calculations

Geological Quarterly
Rock-generated radiogenic heat is one of the key parameters in assessing geothermal potential. To calculate it accurately, it is necessary to know the K, U and Th contents of the rocks in a given region.
Piotr Słomski, Łukasz Jasiński
semanticscholar   +1 more source

Preliminary studies for the standardization of a pXRF analyzer via ICP-OES for the accurate quantification of Pb in new paint.

Analytical Methods
Determining lead (Pb) concentrations in new paints using spectroscopic methods such as Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) requires technical expertise, consumables, equipment for method preparation, and instrumentation ...
Caryn S. Seney, Adam M. Kiefer, Samantha T Brown, Evan R Stair, David Nelson, Lloyd L. Bandoo, William Stewart, Nuren Lara, Clare Donaldson   +8 more
semanticscholar   +1 more source