Fluorescent X-Ray Spectral Analysis of Powdered Solids by Matrix Dilution

Gunn, E. L.

doi:10.1021/ac60122a004

Cited by 27 publications

(3 citation statements)

References 7 publications

(9 reference statements)

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“…The typical procedure of the experimental calibration method comprises five steps: experimental design, data collection, data analysis, calculation of calibration parameters, and calibration application. Various common approaches exist, including standard calibration [37], internal standard calibration [38], scattering internal standard method [39], binary proportion method [40], matrix-dilution method [41], and thin film method [42].…”

Section: Experimental Calibration Methodsmentioning

confidence: 99%

Quantitative analysis of heavy metals in soil by X-ray fluorescence: Fusion, intelligentization and Nonstandard-sample calculation

Ke,

Yin

2024

E3S Web Conf.

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Qualitative and quantitative analysis of heavy metal elements in soil by X-ray fluorescence (XRF) has received widespread attention and research from scholars as an important method for assessing environmental pollution. As a detection sample for multi-component systems, the study of matrix correction has always been the key to XRF data analysis for geological samples. In this study, we reviewed the calculation and analysis methods of XRF data used for geological samples since the Sherman equation was proposed, and divided the development of XRF data processing for soil samples into three stages based on the changes in the matrix correction methods used. By reviewing the processing ideas from past research, this paper summarizes the process of quantitative analysis of geological samples into seven stages and reviews the commonly used methods for each stage. Due to limitations in instrument and standard sample costs, as well as methodological constraints, geological samples currently face three challenges: a shortage of standard samples, insufficient generalization ability of established models, and large measurement errors in low-content element determination. With the further cross-penetration of multiple fields and disciplines and the summary of past research trends, we propose three research trends that may break through these limitations: fusion, intelligentization, and nonstandard-sample calculation. We also discuss the technical solutions related to these three research trends. We extensively discussed the feasibility and advantages of using spectral co-use, knowledge engineering, and adversarial data augmentation techniques to address problems. Our review provides insights into the XRF spectral data processing methods and frameworks for evaluating geological samples, and provides technical solutions to address the current challenges faced by XRF analysis of geological samples.

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Section: Experimental Calibration Methodsmentioning

confidence: 99%

Quantitative analysis of heavy metals in soil by X-ray fluorescence: Fusion, intelligentization and Nonstandard-sample calculation

Ke,

Yin

2024

E3S Web Conf.

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“…These effects do not permit the establishment of a simple relationship between the intensity of fluorescent radiation and the atomic percentage of the fluorescing component in a mixture. Methods of relating fluorescent radiation intensity and composition have included an empirical approach with chemically analyzed standards (2), addition of an internal standard (9), and dilution of the specimen with a fixed amount of an inert salt mixture, either in the dry (6) or fused (4) state.…”

mentioning

confidence: 99%

Possible Solution to Matrix Problem in X-Ray Fluorescence Spectroscopy

Felten¹,

Fankuchen²,

Steigman³

1959

Anal. Chem.

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“…One of the chief problems in applying the x-ray emission technique is the matter of matrix composition and its effect on the line intensity. The successful use of an internal standard (3,8,11) and of dilution (3,6) to overcome these effects has been reported. The method reported here uses, in effect, the scatter from the sample as an internal standard.…”

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confidence: 99%