Results 31 to 40 of about 250,706 (394)

Geochemical characteristics of Jurassic high-sodium coal in Tatuo Coal Mine, Qinghai Province, China

open access: yesEnergy Exploration & Exploitation, 2023
Sodium in the coals of West China has received persistent attention due to its high contents and severe pollutions’ problems during coal utilization.
Jun Wang   +5 more
doaj   +1 more source

Green approach for ultratrace determination of divalent metal ions and arsenic species using total-reflection X-ray fluorescence spectrometry and mercapto-modified graphene oxide nanosheets as a novel adsorbent.

open access: yesAnalytical Chemistry, 2015
A new method based on dispersive microsolid phase extraction (DMSPE) and total-reflection X-ray fluorescence spectrometry (TXRF) is proposed for multielemental ultratrace determination of heavy metal ions and arsenic species. In the developed methodology,
R. Sitko   +5 more
semanticscholar   +1 more source

Comparative study of the photodeposition of Pt, Au and Pd on pre-sulphated TiO2 for the photocatalytic decomposition of phenol [PDF]

open access: yes, 2011
A comparative study of the photodeposition of Pt, Au and Pd under the same experimental conditions onto pre-sulphated and non-sulphated TiO2 was performed.
Colón Ibáñez, Gerardo   +3 more
core   +1 more source

Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope

open access: yesYankuang ceshi, 2021
BACKGROUND China is the largest importer of copper concentrate in the world. Studying the mineralogical characteristics of copper concentrates imported from different origins can be used to support the origin analysis and solid waste identification of ...
MIN Hong   +7 more
doaj   +1 more source

Mobile spectroscopic instrumentation in archaeometry research [PDF]

open access: yes, 2016
Mobile instrumentation is of growing importance to archaeometry research. Equipment is utilized in the field or at museums, thus avoiding transportation or risk of damage to valuable artifacts.
Donais, MK, Vandenabeele, Peter
core   +2 more sources

Non-Destructive Survey of Early Roman Copper-Alloy Brooches using Portable X-ray Fluorescence Spectrometry

open access: yesArchaeometry, 2018
This paper argues that portable X-ray fluorescence spectrometry (pXRF) is a suitable elemental measurement technique to study the production of copper-alloy artefacts.
M. Roxburgh   +3 more
semanticscholar   +1 more source

Development of X-ray fluorescence technique for the uranium determination in Mongolian coal, coal ash, and phosphate ore [PDF]

open access: yes, 2014
The results of the determination of uranium in Mongolian brown coal, coal ash, phosphate rock, and technological samples by X-ray fluorescence (XRF) spectrometry are presented.
Bolortuya, D.   +3 more
core   +2 more sources

Determination of 23 Elements in Biological Samples by Wavelength Dispersion X-ray Fluorescence Spectrometry with High Pressure Pressed Powder Pellet Preparation

open access: yesYankuang ceshi, 2014
In the determination of biological samples by X-ray Fluorescence Spectrometry, sample powder pellets pressed by traditional sample preparation technique at 220-440 MPa are not compact and smooth, so the sample room of X-ray Fluorescence Spectrometry ...
YU Zhao-shui   +5 more
doaj   +2 more sources

Development of Container Free Sample Exposure for Synchrotron X-ray Footprinting. [PDF]

open access: yes, 2020
The method of X-ray footprinting and mass spectrometry (XFMS) on large protein assemblies and membrane protein samples requires high flux density to overcome the hydroxyl radical scavenging reactions produced by the buffer constituents and the total ...
Chen, Yan   +4 more
core   +1 more source

Identification of Clay Element Content in Fabric Dyeing Process Using X-Ray Fluorescence Spectrometry

open access: yesJurnal Fisika, 2022
Clay in West Sumatra has been used as a natural dye for batik, so the batik is known as clay batik. The dyeing of the cloth is done by boiling and soaking the clay together with the cloth for 10 days. The color of the fabric is caused by certain elements
Reni Fitria Nengsih   +5 more
doaj   +1 more source

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