Quantitative X-ray fluorescence analysis of samples of less than ‘infinite thickness’: Difficulties and possibilities

Sitko, Rafał

doi:10.1016/j.sab.2009.09.005

Cited by 87 publications

(71 citation statements)

References 114 publications

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“…The overview of fundamental parameter methods applied in analysis of thin films and multilayers can be found in Ref. (Sitko, 2009). The fundamental parameter methods have some limitations.…”

Section: Fundamental Parameter Methodsmentioning

confidence: 99%

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Quantification in X-Ray Fluorescence Spectrometry

Sitko¹,

Zawisza²

2012

X-Ray Spectroscopy

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Section: Fundamental Parameter Methodsmentioning

confidence: 99%

“…Review of quantitative analysis of these samples including many references can be found in Ref. (Markowicz and Van Grieken, 2002;Sitko, 2009). The general division of the sample in X-ray fluorescence analysis is presented in Fig.…”

Section: General Relationship Between Radiation Intensity and Concentmentioning

confidence: 99%

Quantification in X-Ray Fluorescence Spectrometry

Sitko¹,

Zawisza²

2012

X-Ray Spectroscopy

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“…2). The XRF signal ratios generally are proportional to the concentration ratios of elements in the solid phase provided that the thickness of the sample is sufficient [50]. Therefore, the XRF ratio for K/S combined with the presence of a single ALuS 2 phase directly provides the information about potassium (and indirectly also about sodium) content in this sulfide.…”

Section: Structural Properties and Elemental Compositionmentioning

confidence: 99%

Tunable Eu2+ emission in KxNa1−xLuS2 phosphors for white LED application

et al. 2016

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“…The various approaches to the XRF quantitative analysis of biological, environmental, and geological samples were discussed previously and can be found elsewhere. [25][26][27][28][29] An overview of quantification methods in energy-dispersive XRF analysis was presented by Markowicz. [30] Specimens for the XRF analysis can be prepared according to various procedures.…”

Section: Introductionmentioning

confidence: 99%

Sample thickness considerations for quantitative X‐ray fluorescence analysis of the soft and skeletal tissues of the human body – theoretical evaluation and experimental validation

Szczerbowska-Boruchowska

2012

X-Ray Spectrometry

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Sample thickness considerations for quantitative X-ray fluorescence analysis of the soft and skeletal tissues of the human bodytheoretical evaluation and experimental validation Magdalena Szczerbowska-Boruchowska* A good estimation of the matrix composition and the areal mass of the sample is critical for quantitative X-ray fluorescence (XRF) analysis. Integrated aspects of the XRF quantitative analysis of various human body organs are presented. Special emphasis is placed on the determination of the sample thicknesses at which the specimen can be regarded as thin, thick, or intermediate thickness depending on the element under consideration. Moreover, a method for a fully quantitative analysis allowing the determination of the masses per unit area of chemical elements in thin, thick, and intermediate thickness samples is discussed. It was found that for an incident beam of 17 keV energy, a 15 mm thick sample is of intermediate thickness for all elements between P and Ca and becomes thin from Fe for most human body tissues in a natural form. Dried samples of soft tissues excluding these of low water content can be regarded as thin for all elements from phosphorus to strontium. The use of thin sample approach in quantification of intermediate thickness specimen may result in about 30-45% discrepancy in areal mass (weight fraction) of phosphorus, 20-35% of sulfur, 15-25% of chlorine, 8-15% of potassium, and 5-10% of calcium. Theoretical evaluations presented in the work are verified experimentally. The analysis of human brain samples (white and gray matter) and bovine liver (National Institute of Standards and Technology standard reference materials 1577b) confirms high accuracy of the XRF quantification on the basis of the described procedures.

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Quantitative X-ray fluorescence analysis of samples of less than ‘infinite thickness’: Difficulties and possibilities

Cited by 87 publications

References 114 publications

Quantification in X-Ray Fluorescence Spectrometry

Quantification in X-Ray Fluorescence Spectrometry

Tunable Eu2+ emission in KxNa1−xLuS2 phosphors for white LED application

Sample thickness considerations for quantitative X‐ray fluorescence analysis of the soft and skeletal tissues of the human body – theoretical evaluation and experimental validation

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