scholarly journals Discrimination of Geographical Origin for Scutellaria baicalensis Using Energy Dispersive X-ray Fluorescence Spectrometer

2012 ◽  
Vol 44 (4) ◽  
pp. 484-487 ◽  
Author(s):  
Ji-Young Moon ◽  
Ye-Ji Lee ◽  
Jung-Mi Kang ◽  
Soon-Jun Cho ◽  
Bong-Soo Noh
Keyword(s):  
Geographical Origin ◽  
Scutellaria Baicalensis ◽  
Energy Dispersive ◽  
X Ray ◽  
Fluorescence Spectrometer

Estimation of the properties of an energy-dispersive X-ray fluorescence spectrometer based on a composite double-layer detector

2012 ◽  
Vol 67 (3) ◽  
pp. 235-242 ◽  
Author(s):  
A. Yu. Portnoi ◽  
G. V. Pavlinskii ◽  
M. S. Gorbunov ◽  
Yu. I. Sidorova
Keyword(s):  
Double Layer ◽  
Energy Dispersive ◽  
X Ray ◽  
Fluorescence Spectrometer

Multi-Variate Analysis of Trace Elements from XRF Studies for Classification According to Origin

1992 ◽  
Vol 46 (5) ◽  
pp. 843-847 ◽  
Author(s):  
C. T. Yap
Keyword(s):  
Principal Component Analysis ◽  
Trace Elements ◽  
Geographical Origin ◽  
Principal Component ◽  
Energy Dispersive ◽  
Fluorescence Technique ◽  
X Ray ◽  
Elegant Method ◽  
Variate Analysis ◽  
Made In

The concentrations of twelve trace elements (Mn, Fe, Co, Ni, Cu, Zn, As, Rb, Sr, Y, Zr, and Nb) in 143 pieces of Chinese porcelain made in Jingdezhen, China and elsewhere were obtained with the use of the energy-dispersive x-ray fluorescence technique. An elegant method of multi-variate analysis, known as principal component analysis, was successfully employed in fingerprinting the geographical origin of the porcelain samples.

scholarly journals Energy Dispersive X-Ray Fluorescence Spectrometry Using Pulsed X-Ray Excitation

1975 ◽  
Vol 19 ◽  
pp. 253-265 ◽  
Author(s):  
J. M. Jaklevic ◽  
D. A. Landis ◽  
F. S. Goulding
Keyword(s):  
Feedback Loop ◽  
Large Scale ◽  
Operating Experience ◽  
Energy Dispersive ◽  
Electronic Control ◽  
X Ray ◽  
Feedback Mode ◽  
Pile Up ◽  
Conventional Systems ◽  
Fluorescence Spectrometer

An energy dispersive X-ray fluorescence spectrometer using pulsed X-ray excitation has been developed for use in large-scale environmental analysis programs. A grid controlled X-ray tube is coupled with variable secondary fluorescence targets to analyze for a wide variety of elements with almost optimum sensitivity. The operation of the pulsed tube in a feedback loop with the semiconductor detector spectrometer results in a substantial increase in output counting rates without pile-up. The loop functions by turning off the excitation immediately upon detection of an event by the spectrometer. Pileup events are virtually eliminated and the X-ray tube's available anode power is better utilized.The electronic control of this feedback mode results in some unique features in the response of the system to varying sample mass. These features are discussed in detail. Experimental results for sensitivity and accuracy over the range of elements measured are presented. Early operating experience with the unit indicates increases of counting rates of a factor of five compared with similar conventional systems.

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