Nonaqueous suspensions in total reflection X-ray fluorescence analysis of solids

Sharanov, P. Yu.; Alov, N. V.; Zolotov, Yu. A.

doi:10.1134/s0012500816030101

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…Adding the Triton X‐100 surfactant did not lead to satisfactory suspension stability. Earlier a new approach was proposed for the determination of elements in solids using suspensions based on ethylene glycol 15 . Preparation of non‐aqueous suspensions has several advantages such as stability of homogeneity in suspension due to the higher viscosity of ethylene glycol and therefore slowed sedimentation.…”

Section: Resultsmentioning

confidence: 99%

“…Earlier a new approach was proposed for the determination of elements in solids using suspensions based on ethylene glycol. 15 Preparation of non-aqueous suspensions has several advantages such as stability of homogeneity in suspension due to the higher viscosity of ethylene glycol and therefore slowed sedimentation. At the same time, no phase separation occurs when an internal standard is added to the ethylene glycol solution.…”

Section: Sample Preparationmentioning

confidence: 99%

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Quantification of elements in dietary supplements by total reflection x‐ray fluorescence and inductively coupled plasma optical emission spectrometry

Alov,

Danilov,

Sharanov

et al. 2023

X-Ray Spectrometry

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The main purpose of this study was the comparison of the results of quantification obtained via different sample preparation approaches such as microwave‐assisted wet digestion (MAWD) and suspension preparation. Two total reflection x‐ray fluorescence (TXRF) spectrometers equipped with Mo x‐ray tubes were used to compare results obtained via two different paths of sample preparations which would further be compared to the conventional way of analysis by inductively coupled plasma optical emission spectrometry (ICP‐OES) including MAWD. Three dietary supplement samples with different sets and concentrations of elements were analyzed. The benefits and limitations of the simplified path of sample preparation were highlighted. A round‐robin test between TXRF and ICP‐OES was discussed. Accuracy as the percentage of recovery in all measurements ranged from 80 to 120. Precision for all results did not exceed 8% for TXRF and 5% for ICP‐OES. Limits of quantification by TXRF are ranged from 1 to 0.01 mg/pill for different elements. It was shown that suspension preparation of samples might be a useful response to increasing demand for quality control of dietary supplements since it is less time consuming and cost efficient.

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Section: Resultsmentioning

confidence: 99%

Section: Sample Preparationmentioning

confidence: 99%

Quantification of elements in dietary supplements by total reflection x‐ray fluorescence and inductively coupled plasma optical emission spectrometry

Alov,

Danilov,

Sharanov

et al. 2023

X-Ray Spectrometry

View full text Add to dashboard Cite

show abstract

“…It offers the advantage of improving the stability of suspension and reduced requirements of grinding. 28 Importantly, its own viscosity properties help alleviate the impact of particle settling on suspension stability.…”

Section: Methodsmentioning

confidence: 99%

“…20,21 Furthermore, as solid samples can be prepared as a suspension for analysis, it is widely used for the analysis of major and trace elements in a variety of mineral samples, such as k-feldspars, 22,23 copper zinc ores, 24,25 apatite, 23,26 and others. [27][28][29] Our previous work summarized TXRF analytical methods that have been applied to different polymetallic minerals. 30 It was found that the reproducibility of elements in the suspension suffer from poor analytical reproducibility when 1% Triton X-100 is used as a dispersant to analyze copper-nickel sulde ores.…”

Section: Introductionmentioning

confidence: 99%

Exploratory studies on total reflection X-ray fluorescence spectrometry combined with slurry sampling for the multi-element analysis of copper-nickel sulfide ore

Zhang,

He,

Chen

et al. 2023

J. Anal. At. Spectrom.

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Study of the chemical composition of coal and coal ash by X‐ray fluorescence method: A review

Revenko,

Pashkova

2024

X-Ray Spectrometry

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Information about the elemental compositions of coal and coal ash is very important to solve some issues related to both technological processes and the control of environmental pollution. It is known that the coal and coal ash samples often contain significant amounts of valuable as well as toxic components (e.g., V, Cr, Со, Ni, Cu, Zn, As, Sr, Ba, Pb, Ga, and Ge) that can be successfully determined by X‐ray fluorescence (XRF) spectrometry. This review briefly discusses the development of XRF equipment, elements of interest determined by XRF, and common sample preparation procedures. The calculation of relative intensities of analytical lines of some elements and scattered radiation is presented to demonstrate possible matrix effects in XRF analysis. Possibilities and drawbacks of total reflection XRF (TXRF) are described in detail as the coal and ash analysis is a relatively new area of application of TXRF method. The review also presents examples of the application of the XRF method for analysis of waste from coal preparation plants and thermal power plants to assess their prospects and to choose a method for extracting individual elements. Among the reviewed publications, several works are devoted to the study of the element distributions, especially rare earth elements, in coals, coal ash, and coal waste.

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Nonaqueous suspensions in total reflection X-ray fluorescence analysis of solids

Cited by 8 publications

References 12 publications

Quantification of elements in dietary supplements by total reflection x‐ray fluorescence and inductively coupled plasma optical emission spectrometry

Quantification of elements in dietary supplements by total reflection x‐ray fluorescence and inductively coupled plasma optical emission spectrometry

Exploratory studies on total reflection X-ray fluorescence spectrometry combined with slurry sampling for the multi-element analysis of copper-nickel sulfide ore

Study of the chemical composition of coal and coal ash by X‐ray fluorescence method: A review

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