Determination of mineral element concentrations in wheat, sunflower, chickpea and lentil cultivars in response to P fertilization by polarized energy dispersive X-ray fluorescence

2009 ◽  
Vol 38 (5) ◽  
pp. 451-462 ◽  
Author(s):  
Aydin Gunes ◽  
Ali Inal ◽  
Yusuf K. Kadioglu
Keyword(s):  
Energy Dispersive ◽  
Mineral Element ◽  
P Fertilization ◽  
X Ray ◽  
Element Concentrations

Lateral resolution of the electron microbeam analysis

1978 ◽  
Vol 36 (1) ◽  
pp. 542-543
Author(s):  
H.J. Dudek
Keyword(s):  
Quantitative Analysis ◽  
Depth Resolution ◽  
Lateral Resolution ◽  
Cylindrical Particle ◽  
Correction Procedure ◽  
X Ray ◽  
Element Concentrations ◽  
Microbeam Analysis ◽  
The Matrix

The chemical inhomogenities in modern materials such as fibers, phases and inclusions, often have diameters in the region of one micrometer. Using electron microbeam analysis for the determination of the element concentrations one has to know the smallest possible diameter of such regions for a given accuracy of the quantitative analysis.In th is paper the correction procedure for the quantitative electron microbeam analysis is extended to a spacial problem to determine the smallest possible measurements of a cylindrical particle P of high D (depth resolution) and diameter L (lateral resolution) embeded in a matrix M and which has to be analysed quantitative with the accuracy q. The mathematical accounts lead to the following form of the characteristic x-ray intens ity of the element i of a particle P embeded in the matrix M in relation to the intensity of a standard S

Preparation And elemental analysis of ancient fibers

1987 ◽  
Vol 45 ◽  
pp. 410-411
Author(s):  
Allen Angel ◽  
Kathryn A. Jakes
Keyword(s):  
Cross Sections ◽  
Physical Structure ◽  
Energy Dispersive ◽  
Archaeological Sites ◽  
X Ray ◽  
Long Term Storage ◽  
Backscattered Electron ◽  
Electron Imaging

Fabrics recovered from archaeological sites often are so badly degraded that fiber identification based on physical morphology is difficult. Although diagenetic changes may be viewed as destructive to factors necessary for the discernment of fiber information, changes occurring during any stage of a fiber's lifetime leave a record within the fiber's chemical and physical structure. These alterations may offer valuable clues to understanding the conditions of the fiber's growth, fiber preparation and fabric processing technology and conditions of burial or long term storage (1).Energy dispersive spectrometry has been reported to be suitable for determination of mordant treatment on historic fibers (2,3) and has been used to characterize metal wrapping of combination yarns (4,5). In this study, a technique is developed which provides fractured cross sections of fibers for x-ray analysis and elemental mapping. In addition, backscattered electron imaging (BSI) and energy dispersive x-ray microanalysis (EDS) are utilized to correlate elements to their distribution in fibers.

Evaluation on determination of iodine in coal by energy dispersive X-ray fluorescence

2005 ◽  
Vol 39 (4) ◽  
pp. 391-394 ◽  
Author(s):  
Binbin Wang ◽  
John C. Jackson ◽  
Curtis Palmer ◽  
Baoshan Zheng ◽  
Robert B. Finkelman
Keyword(s):  
Energy Dispersive ◽  
X Ray

Determination of small concentrations of hafnia in zirconia by selective excitation energy dispersive X-ray emission spectrometry

1994 ◽  
Vol 349 (6) ◽  
pp. 434-437 ◽  
Author(s):  
R. M. Agrawal ◽  
S. N. Jha ◽  
Rugmini Kaimal ◽  
S. K. Malhotra ◽  
B. L. Jangida
Keyword(s):  
Excitation Energy ◽  
Selective Excitation ◽  
Energy Dispersive ◽  
Emission Spectrometry ◽  
X Ray

Determination of parts per billion levels of electrodeposited metals by energy dispersive x-ray fluorescence spectrometry

1977 ◽  
Vol 49 (12) ◽  
pp. 1734-1737 ◽  
Author(s):  
John A. Boslett ◽  
Robert L. R. Towns ◽  
Robert G. Megargle ◽  
Karl H. Pearson ◽  
Thomas C. Furnas
Keyword(s):  
Energy Dispersive ◽  
Fluorescence Spectrometry ◽  
X Ray
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