X-Ray Spectrometric Determination of Copper, Tin, and Uranium in Bronze Heat-Treating Material*

1960 ◽  
Vol 4 ◽  
pp. 457-473
Author(s):  
G. R. Blank ◽  
H. A. Heller
Keyword(s):  
Acid Solution ◽  
Confidence Level ◽  
Uranium Concentration ◽  
Heat Treating ◽  
Internal Standards ◽  
X Ray ◽  
First Order ◽  
Limits Of Error ◽  
Determination Of Copper

AbstractA method is presented for the X-ray spectrometric determination of copper, tin, and uranium in a bronze heat-treating material. The method is based on the irradiation of an acid solution of the sample, to which indium and zinc have been added as internal standards. Quantitative determinations of copper and tin (each in the 40 to 60% range) are calculated from the ratios of the CuKα/ZnKα and SnKα/In Kα intensities. Uranium concentration (in the 1 to 10% range) is calculated from the ratio of the ULα/ In Kα intensities, A correction for the interference of the second-order In Kβ1,3 doublet with the first-order ULα peak is described. The over-all limits of error for single determinations at the 95% confidence level are ±0,58% copper, ±0,56% tin, and ±0,31% uranium.

scholarly journals Determination of copper in brass by X-ray diffractometer

1961 ◽  
Vol 10 (13) ◽  
pp. 1361-1367 ◽  
Author(s):  
Shizo HIRANO ◽  
Hiroo SASUGA ◽  
Kiyoshi TABUCHI
Keyword(s):  
X Ray ◽  
Determination Of Copper

Simultaneous determination of trace elements in lavage fluids from human bronchial alveoli by energy dispersive x-ray fluorescence. 1: Technique and determination of the normal reference interval.

1985 ◽  
Vol 31 (4) ◽  
pp. 551-555 ◽  
Author(s):  
E A Maier ◽  
F Rastegar ◽  
R Heimburger ◽  
C Ruch ◽  
A Pelletier ◽  
...  
Keyword(s):  
Trace Elements ◽  
Analytical Procedure ◽  
Reference Interval ◽  
Lavage Fluid ◽  
Energy Dispersive ◽  
Polypropylene Film ◽  
Internal Standards ◽  
X Ray ◽  
Large Numbers

Abstract We have applied energy dispersive x-ray fluorescence to the analysis of broncho-alveolar lavage fluids, to determine the concentration of several elements simultaneously with manipulation of the sample minimized. A 20-microL sample of a homogenized lavage fluid, to which two internal standards (containing Y and V) have been added, is deposited on a polypropylene film, 4 microns in thickness, and analyzed by x-ray fluorescence. We report the analytical procedure, the detection limits, and the reproducibility. The normal concentration range for trace elements is reported for a selected population. The simplicity and rapidity of the method, and the possibility of automating measurements, make this procedure suitable for screening large numbers of lavage specimens and to establish the diagnosis of some pneumoconioses.

STRUCTURAL DETERMINATION OF THE Si/Cu(110) INTERFACE BY PHOTOELECTRON DIFFRACTION

1997 ◽  
Vol 04 (06) ◽  
pp. 1331-1335 ◽  
Author(s):  
C. ROJAS ◽  
J. A. MARTÍn-GAGO ◽  
E. ROMÁN ◽  
G. PAOLUCCI ◽  
B. BRENA ◽  
...  
Keyword(s):  
Room Temperature ◽  
Structural Parameters ◽  
Single Scattering ◽  
Structural Determination ◽  
X Ray ◽  
Photoelectron Diffraction ◽  
First Order ◽  
Proposed Model ◽  
Laboratory Source

Deposition of 0.5 Si monolayer (ML) on a Cu (110) surface at room temperature (RT) leads to the formation of a c(2×2) LEED pattern. In order to find out the surface atomic structure of this ordered phase, X-ray photoelectron diffraction (XPD) azimuthal scans at different photon energies and full hemispherical XPD patterns of the Si 2 p core level have been measured using both synchrotron radiation and a laboratory source. We present an atomic model for the surface structure based on the examination of forward scattering and first order interference XPD features. Refinement of the structural parameters was achieved by performing single scattering cluster (SSC) calculations. In the proposed model Si atoms replace Cu atoms at the surface along the [Formula: see text] atomic rows.

Rapid X-Ray Fluorescence Determination of Phosphorus in Geologic Samples

1971 ◽  
Vol 25 (1) ◽  
pp. 41-43 ◽  
Author(s):  
Brent P. Fabbi
Keyword(s):  
Pulse Height ◽  
Second Order ◽  
Analytical Line ◽  
X Ray ◽  
First Order ◽  
Peak Overlap ◽  
Fluorescence Determination ◽  
Geologic Samples

Calcium and Kβ1 and Kβ5 both have second order (II) lines that interfere spectrally with the phosphorus Kα1 first order (I) analytical line in the x-ray fluorescence determination. By combining maximum pulse height discrimination with a mathematical correction for peak overlap, phosphorus can be accurately determined in a wide variety of geologic samples.

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