Antiscattering X-ray fluorescence analysis for large-area samples
نویسندگان
چکیده
منابع مشابه
Application of large-area avalanche photodiodes to energy-dispersive x-ray fluorescence analysis
The performance of several large-area avalanche photodiodes (LAAPDs) for application to x-ray spectrometry at room temperature was investigated. Optimum detector performance was obtained for gains of about 50–70. Good energy linearity of the LAAPDs’ response to x-rays was observed up to energies of about 25 keV. For this energy range the space charge effects are negligible for gains below 100–1...
متن کاملFusion Monitors For X-Ray Fluorescence X Analysis
Modern analytical laboratories require tools to assess uncertainties at every step of the analytical process. Borate fusion combined with X-Ray fluorescence has often been demonstrated to be essential for the determination of major elements in cements, ores and a large number of other matrixes. However, drift and bias contributions from the fusion technique, burner position, fluxer to fluxer, m...
متن کاملFast X-Ray Fluorescence Microtomography of Hydrated Biological Samples
Metals and metalloids play a key role in plant and other biological systems as some of them are essential to living organisms and all can be toxic at high concentrations. It is therefore important to understand how they are accumulated, complexed and transported within plants. In situ imaging of metal distribution at physiological relevant concentrations in highly hydrated biological systems is...
متن کاملX-Ray Fluorescence Analysis of Gemstones
The energy dispersive X-ray fluorescence analysis (ED-XRFA) is a well-established tool for multielement composition analysis in different fields/1/. It works non-conducting and it is non-destructive. No particular sample preparation is necessary if the specimens have an almost planar and smooth surface. For the characterization of precious gemstone material it is also important that the deposit...
متن کاملQuantitative Analysis by Energy Dispersive X-ray Fluorescence by the Transmission Method Applied to Geological Samples
Three certified samples of different matrices (Soil-5, SL-1/IAEA and SARM-4/SABS) were quantitatively analysed by energy dispersive X-ray fluorescence with radioisotopic excitation. The observed errors were about 10-20% for the majority of the elements and less than 10% for Fe and Zn in the Soil-5, Mn in SL-1, and Ti, Fe and Zn in SARM-4 samples. Annular radioactive sources of Fe-55 and Cd-109 ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Analytical Atomic Spectrometry
سال: 2019
ISSN: 0267-9477,1364-5544
DOI: 10.1039/c9ja00220k