Ethiopia has been gaining attention in recent years as an emerging source of high-quality emerald. Ethiopian emerald samples with different colors ranging from dark green to light were selected study the gemological properties, chemical composition, and spectral characteristics. The emeralds examined using conventional instruments, including X-ray fluorescence spectrometry, LA-ICP-MS, UV/Vis/NI...

The project FUXYA2020 was intended to design and prototype a low-cost basic energy dispersive X-ray fluorescence spectrometer for all those cases where there is not enough financial support buy commercial device. Indeed, home-made instruments are ideal when funds low but constant over the years, as this approach allows costs be spread longer period of time. mostly cultural heritage (CH) applica...

Energy dispersive X-ray fluorescence (EDXRF) is one of the most quick, environmentally friendly and least expensive spectroscopic analytical methodologies for assessing soil quality parameters. However, challenges in EDXRF spectral data analysis still demand more efficient methods. One possible solution using Machine Learning (ML), particularly Multi-target Regression (MTR) methods, which predi...

Airborne particulate samples were collected from various reference sites in Hong Kong and the energy dispersive X-ray fluorescence (EDXRF) intensities for 19 chemical elements were recorded. Principal component analysis (PCA) was employed so that the variances of these 19 original variables were captured by a few new indices called principal components or PCs. Data points for similar sources we...

In the present study, we collected and investigated spinels from Man Sin deposit in Myanmar using standard gemological testing, microscopic observation, EDXRF, Raman spectrometry. The color observation was performed under various lighting conditions to show differences. A very high Cr/Fe ratio is linked with exceptionally strong red fluorescence. Microscopic spectroscopy identified mineral incl...

SiO 2 /Bi WO 6 photocatalyst with Si/Bi/W=1:2:1 molar ratio was obtained by the sol-gel method from bismuth nitrate, sodium tungstate and biogenic silica rice husk biomass followed calcination. Bi used as a control sample. FT-IR, SEM, XRD, EDXRF, UV-Vis methods were to systematically characterize as-obtained materials. Photodegradation of Indigo Carmine in exposure UV, sunlight xenon light stud...

The present paper put forth the isolation and complete characterization of three bacterial isolates from different sites of East Calcutta Wetland (ECW). These isolates show tolerance to heavy metals like Ag, Al, Cu, Cr, Co, Ni, Pb and were found to be efficient metal accumulators as evident from Energy Dispersive X Ray Fluorescence (EDXRF) analysis and Transmission Electron Microscopy (TEM). Be...

The objective of this work is to utilize a low-grade synthetic rutile to produce high-grade titania nanoparticles. Due to the nature of the precursor, the hydrothermal method needs modification in order to accommodate the precursors and chemical reagents. The product will be characterized with the XRD (crystallite size and crystallinity), EDXRF (chemical composition), SEM (Morphology), N2 adsor...