Soil quality. Determination of elemental composition by X-ray fluorescence

2014 ◽  
Keyword(s):  
Elemental Composition ◽  
Soil Quality ◽  
X Ray

scholarly journals DETERMINATION OF TYPE AND MARK OF PROJECTILES BY METHOD OF X-RAY FLUORESCENCE SPECTRAL ANALYSIS IN THE STUDY OF PNEUMATICALLY SHOT INJURIOUS TO SOME CLOTHING MATERIALS

2016 ◽  
Vol 16 ◽  
pp. 391-398
Author(s):  
I. M. Kozachenko
Keyword(s):  
Spectral Analysis ◽  
Small Group ◽  
Elemental Composition ◽  
Medical Examination ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Foreign Production ◽  
Quantitative Analyses

The X-ray fluorescence spectral qualitative and quantitative analyses were performed for the elemental composition of 4 marks of bullets for pneumatic weapon of home and foreign production, and also for imitators of common clothing materials camouflage fabric and cotton knitwear. It is determined that lead bullets for pneumatic weapons are capable to introduce some elements of their composition, which are inherent in one or another mark of bullets, to the area of damage on certain clothing materials, in particular, camouflage fabric and cotton knitwear. This expands the possibilities of forensic medical examination when dealing with a problem of determining the type and mark of a bullet or of a small group of bullets similar in their elemental composition, due to which the pneumatical shot injuries of examined objects took place.

Energy Dispersive X-Ray Spectrometry of Gold-Silver-Copper Standards for Comparison with Historic Gold Objects

1990 ◽  
Vol 185 ◽  
Author(s):  
S.M. White ◽  
R.J. Koestler ◽  
C. Blair ◽  
N. Indictor
Keyword(s):  
Elemental Composition ◽  
Ternary Mixtures ◽  
Energy Dispersive ◽  
X Ray ◽  
Silver Copper ◽  
Gold Silver

AbstractSeven ternary mixtures of gold(80-95%)-silver(4-15%)-copper(1-15%) were prepared as standards for the determination of elemental composition by energy dispersive X-ray spectrometry (EDS). Two geometric forms (flat and oblate) of the standards were prepared for comparison to the analyses of historic gold objects. Surface analyses were performed. Polished sections of the standards were also analysed Comparison between two methods for collecting EDS data is reported. The analyses are discussed in terms of developing a generalized methodology for estimating elemental composition of museum artifacts.

scholarly journals Comparative analysis of X-ray fluorescence methods for elemental composition determination of the archaeological ceramics from low sample quantity

2021 ◽  
Vol 25 (1) ◽  
pp. 20-33
Author(s):  
G. V. Pashkova ◽  
◽  
M. M. Mukhamedova ◽  
V. M. Chubarov ◽  
A. S. Maltsev ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Inductively Coupled Plasma ◽  
Bulk Composition ◽  
Fluorescence Analysis ◽  
Total Reflection ◽  
Late Neolithic ◽  
Burial Site ◽  
Archaeological Ceramics ◽  
X Ray

Wavelength-dispersive X-ray fluorescence analysis (WDXRF) and total-reflection X-ray fluorescence (TXRF) analysis were applied to study the elemental composition of the Late Neolithic ancient ceramics collected at the Popovsky Lug burial site (Kachug, Upper Lena river, Russia). Semi-quantitative non-destructive analysis of ceramic pieces showed that measurements of the upper and lower sides of the ceramic are less informative than the measurement of its cut. Various sample preparation techniques for the low quantity of crushed ceramics such as fusion, pressing and preparation of suspensions were compared to preserve the material. Samples were prepared as 150 mg fused beads and 250 mg pressed pellets for WDXRF, and as suspensions of 20 mg sample based on the aqueous solution of the Triton X-100 surfactant for TXRF. Certified methods were used to validate the obtained contents of rock-forming oxides and inductively coupled plasma mass spectrometry was used to confirm the results of trace elements determination. Based on the carried-out studies, a combination of the wavelength-dispersive X-ray fluorescence analysis (glass) and total-reflection X-ray fluorescence analysis (suspension) methods was chosen to obtain the data on the elemental bulk composition of archaeological ceramics. The proposed combination allowed the quantitative determination of Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe, V, Cr, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Pb, and Ba from the sample of crushed ceramics weighing only about 170 mg.

scholarly journals Portable X-Ray Fluorescence Spectroscopy for Rapid and Cost-Effective Determination of Elemental Composition of Ground Forage

2019 ◽  
Vol 10 ◽  
Author(s):  
Yadav Sapkota ◽  
Louis M. McDonald ◽  
Thomas C. Griggs ◽  
Thomas J. Basden ◽  
Brandon Lee Drake
Keyword(s):  
Fluorescence Spectroscopy ◽  
Elemental Composition ◽  
Cost Effective ◽  
X Ray
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