Determination of thorium and uranium in air filters by XRF analysis using excitation of K-lines by radionuclides

1987 ◽  
Vol 329 (5) ◽  
pp. 581-583 ◽  
Author(s):  
N. Pilz ◽  
P. Hoffmann ◽  
K. H. Lieser ◽  
S. G. Gavrides
Keyword(s):  
Air Filters ◽  
Xrf Analysis

scholarly journals Accuracy improvement in XRF analysis for the quantification of elements ranging from tenths to thousands μg g−1 in human tissues using different matrix reference materials

2020 ◽  
Vol 35 (12) ◽  
pp. 2920-2927
Author(s):  
Jorge Machado ◽  
Patrícia Miguel Carvalho ◽  
Ana Félix ◽  
Delfin Doutel ◽  
José Paulo Santos ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Reference Materials ◽  
Fluorescence Spectrometry ◽  
Human Tissues ◽  
Accuracy Improvement ◽  
External Calibration ◽  
X Ray ◽  
Xrf Analysis ◽  
Calibration Approach

In this work, we aim at achieving the most accurate quantitative determination of elements in human tissues by means of X-ray fluorescence spectrometry using the external calibration approach.

scholarly journals Simultaneous determination of the major and minor elements in high-purity mullite by XRF analysis.

1992 ◽  
Vol 41 (11) ◽  
pp. 589-592
Author(s):  
Toshihisa MARUTA ◽  
Shigeru YOKOYAMA ◽  
Hideki KOBAYASHI ◽  
Takeshi YAMANE
Keyword(s):  
Simultaneous Determination ◽  
High Purity ◽  
Xrf Analysis ◽  
Minor Elements

scholarly journals Differential X-Ray Attenuation in MA-XRF Analysis for a Non-invasive Determination of Gilding Thickness

2020 ◽  
Vol 8 ◽  
Author(s):  
Sergio Augusto Barcellos Lins ◽  
Stefano Ridolfi ◽  
Giovanni Ettore Gigante ◽  
Roberto Cesareo ◽  
Monica Albini ◽  
...  
Keyword(s):  
X Ray ◽  
Xrf Analysis ◽  
Non Invasive

XRF Analysis of Vegetation Samples and its Application to Mineral Exploration

1982 ◽  
Vol 26 ◽  
pp. 409-414
Author(s):  
T. K. Smith ◽  
T. K. Ball
Keyword(s):  
Trace Elements ◽  
Mineral Exploration ◽  
Loss On Ignition ◽  
Large Magnitude ◽  
Oxidation Treatment ◽  
Minor And Trace Elements ◽  
Xrf Analysis ◽  
Dry Oxidation ◽  
Vegetation Samples

Many analysts use a wet or dry oxidation treatment prior to determination of minor and trace elements in non-fossilised vegetation. This stage is often unnecessary for XRFS since the technique is sufficiently sensitive for many purposes to permit the analysis of unashed material. Indeed, inaccurate results may be obtained if volati1es are lost, if no correction is made for loss on ignition, or if such correction is of large magnitude.

scholarly journals Determination of 210Po in air filters from metallurgic industry

2019 ◽  
Vol 322 (3) ◽  
pp. 1351-1356 ◽  
Author(s):  
Grzegorz Szaciłowski ◽  
Jakub Ośko ◽  
Tomasz Pliszczyński
Keyword(s):  
Thermal Process ◽  
Liquid Scintillation ◽  
Aerosol Particles ◽  
Ferrous Metal ◽  
Acid Leaching ◽  
Scintillation Counting ◽  
Elevated Concentration ◽  
Air Filters ◽  
Co Precipitation

Abstract The elevated concentration of 210Po attached to aerosol particles inside a non-ferrous metal refinery was studied. The aerosols were collected on Petrianov or glass-fiber filters and subsequently subjected to radiochemical procedure consisting of acid leaching and concentration by micro co-precipitation with manganese oxide. For the activity determination alpha spectrometry and liquid scintillation counting (LSC) were applied. The obtained results showed that usually observed polonium concentration inside the plant was lower than 78 mBq m−3, however short spikes up to 7430 ± 710 mBq m−3 (related to the specific thermal process) were also observed.

Quantitative XRF Analysis of Trace Barium in Porcelains by Source Excitation

1985 ◽  
Vol 39 (6) ◽  
pp. 1040-1042 ◽  
Author(s):  
C. T. Yap ◽  
S. M. Tang
Keyword(s):  
World War Ii ◽  
Seventeenth Century ◽  
Quantitative Determination ◽  
World War ◽  
Addition Method ◽  
Modern Times ◽  
Xrf Analysis ◽  
Calibration Curves ◽  
Source Excitation

Quantitative determination of barium in Chinese porcelains from the seventeenth century to modern times together with some modern non-Chinese porcelains was made with the use of calibration curves obtained by the addition method. All Chinese porcelains from K'ang Hsi (Kangxi, 1662–1722) up to World War II were found to have a barium content between 100 ppm and 130 ppm. For those made after World War II, the barium content varies from 60 ppm to 7000 ppm, and only a few pieces are in the range from 100 ppm to 130 ppm, making it possible to identify most of the modern fake reproductions.

Determination of the retention efficiency of industrial air filters for particle sizes in the submicron range

1986 ◽  
Vol 17 (6) ◽  
pp. 931-936 ◽  
Author(s):  
R. Henkelmann ◽  
F. Baumgärtner ◽  
K. Krebs ◽  
O. Petzoldt
Keyword(s):  
Particle Sizes ◽  
Retention Efficiency ◽  
Air Filters

Recent IAEA intercomparison on the determination of trace elements in simulated air filters

1979 ◽  
Vol 2 (1) ◽  
pp. 19-25
Author(s):  
A. Tugsavul ◽  
R. Dybczynski ◽  
O. Suschny
Keyword(s):  
Trace Elements ◽  
Air Filters

scholarly journals Non Invasive XRF Analysis of Human Hair for Health State Determination of Breast Tissue

2015 ◽  
Vol 8 (6) ◽  
Author(s):  
Asghar Maziar ◽  
Daryoush Shahbazi-Gahrouei ◽  
Mohammad Bagher Tavakoli ◽  
Vahid Changizi
Keyword(s):  
Human Hair ◽  
Breast Tissue ◽  
Health State ◽  
Xrf Analysis ◽  
Non Invasive ◽  
State Determination
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