منابع مشابه
X-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 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 کاملX-ray Absorption Spectroscopy Using X–ray Fluorescence Spectrometer
Strong characteristic Kα X-ray lines are accompanied by weak lines due to the radiative Auger effect (RAE) [1, 2]. The characteristic Kα fluorescent X-rays (K-L2,3 lines) are emitted by the 2p→1s electric dipole transition after one of the 1s electron photoionization, Though the probability is less than 0.01, one of the 2p electrons is excited into an unoccupied discrete or continuum level simu...
متن کاملSubsurface Particle Analysis using X-ray Computed Tomography and Confocal X- ray Fluorescence
متن کامل
Spatially resolved X-ray fluorescence analysis with a pyroelectric X-ray emitter.
A portable instrument for two-dimensional X-ray fluorescence imaging was assembled with an X-ray source using a pyroelectric crystal, which was driven by a 9-V dry battery, a Si-PIN detector, a slit, and pulse motors. Line scanning for a mug and a knife-edge-scan of an iron sheet were carried out using this spectrometer. The sensitivity of the spectrometer was sufficient for elemental analysis ...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1995
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed072p241.1