Use of compton scattering in quantitative XRF analysis of stained glass

Bui, C.; Confalonieri, L.; Milazzo, M.

doi:10.1016/0883-2889(89)90200-1

Cited by 15 publications

(5 citation statements)

References 12 publications

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“…Internal standardization using the Compton peak area was used to correct differences in attenuation, in the determination of the weight fractions of Ca, Fe, Zn, Br, Rb, Sr and Pb.…”

Section: Methodsmentioning

confidence: 99%

Multielement analysis of lichen samples using XRF methods. Comparison with ICP‐AES and FAAS

et al. 2015

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This research presents the contents of Ca, Fe, Zn, Br, Rb, Sr and Pb in lichen samples used as biomonitors of air pollution collected in Havana. Statistical comparisons were made among the results obtained in three campaigns during three years. Two X‐Ray Fluorescence (XRF) methods were used, employing for excitation an annular 109Cd source and a Mo X‐ray tube with a molybdenum secondary target. In both cases, matrix effects were corrected by the use of normalization for the Compton scattered peak; in this way the determination is more efficient. For quality control of the results, biological Certified Reference Materials were analyzed and were made comparisons between XRF, Inductively Coupled Plasma‐Atomic Emission Spectrometry and Flame Atomic Absorption Spectrophotometry. No significant differences were found between the different techniques. The elemental distribution patterns obtained for each metal were associated with different pollution sources, thus contributing to the assessment of air pollution in Havana. Copyright © 2015 John Wiley & Sons, Ltd.

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“…Internal standardization using the Compton peak area was used to correct differences in attenuation, in the determination of the weight fractions of Ca, Fe, Zn, Br, Rb, Sr and Pb.…”

Section: Methodsmentioning

confidence: 99%

Multielement analysis of lichen samples using XRF methods. Comparison with ICP‐AES and FAAS

et al. 2015

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“…Previous studies have shown that radiation Compton scattered by the sample can be used as an internal standard to correct for the effects of self-absorption and geometrical variations on the measured XRF signal [26], [27]. Scatter normalisation will also correct for any small changes in source-sample or sample-detector distance errors in sample positioning.…”

Section: Absorption and Geometry Correction Techniquesmentioning

confidence: 99%

A bench-top K X-ray fluorescence system for quantitative measurement of gold nanoparticles for biological sample diagnostics

Ricketts

Guazzoni

Castoldi

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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Gold nanoparticles can be targeted to biomarkers to give functional information on a range of tumour characteristics. X-ray fluorescence (XRF) techniques offer potential quantitative measurement of the distribution of such heavy metal nanoparticles. Biologists are developing 3D tissue engineered cellular models on the centimetre scale to optimise targeting techniques of nanoparticles to a range of tumour characteristics. Here we present a high energy bench-top K-x-ray fluorescence system designed for sensitivity to bulk measurement of gold nanoparticle concentration for intended use in such thick biological samples. Previous work has demonstrated use of a L-XRF system in measuring gold concentrations but being a low energy technique it is restricted to thin samples or superficial tumours. The presented system comprised a high purity germanium detector and filtered tungsten xray source, capable of quantitative measurement of gold nanoparticle concentration of thicker samples. The developed system achieved a measured detection limit of between 0.2-0.6 mgAu/ml, meeting specifications of biologists and being approximately one order of magnitude better than the detection limit of alternative K-XRF nanoparticle detection techniques. The scatter-corrected K-XRF signal of gold was linear with GNP concentrations down to the detection limit, thus demonstrating potential in GNP concentration quantification. The K-XRF system demonstrated between 5 and 9 times less sensitivity than a previous L-XRF bench-top system, due to a fundamental limitation of lower photoelectric interaction probabilities at higher K-edge energies. Importantly, the K-XRF technique is however less affected by overlying thickness, and so offers future potential in interrogating thick biological samples.

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“…The degree of Compton scatter measured by the detector can be taken as an internal gauge of the attenuation properties of the sample and used to correct for self-absorption of fluorescence photons and also for attenuation of source photons as they travel through the sample. 26 Specifically, as implemented in previous XRF studies, 20,27 the signal from the Compton scatter peak is used to take the ratio of net fluorescence signal to Compton scatter to correct for attenuation:…”

Section: B Xrf Signal Extraction and Processingmentioning

confidence: 99%

Experimental demonstration of direct L ‐shell x‐ray fluorescence imaging of gold nanoparticles using a benchtop x‐ray source

2013

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Use of compton scattering in quantitative XRF analysis of stained glass

Cited by 15 publications

References 12 publications

Multielement analysis of lichen samples using XRF methods. Comparison with ICP‐AES and FAAS

Multielement analysis of lichen samples using XRF methods. Comparison with ICP‐AES and FAAS

A bench-top K X-ray fluorescence system for quantitative measurement of gold nanoparticles for biological sample diagnostics

Experimental demonstration of direct L ‐shell x‐ray fluorescence imaging of gold nanoparticles using a benchtop x‐ray source

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