2018 atomic spectrometry update – a review of advances in X-ray fluorescence spectrometry and its special applications

Vanhoof, Christine; Bacon, Jeffrey R.; Ellis, Andrew T.; Vincze, László; Wobrauschek, P.

doi:10.1039/c8ja90030b

Cited by 32 publications

(24 citation statements)

References 118 publications

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“…Quantification of heavy elements in samples is one of the most important subjects in analytical chemistry [1]. Substances that contain heavy elements are often toxic and hazardous; therefore, nondestructive methods to safely analyze such heavy elements confined in containers are desirable, such as in cargo security [2] and in analysis of polluted wastes, water and soils [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Quantification of Heavy Elements Through the Analysis of Beam Hardening Artifacts Using Double-Exposure X-ray Computed Tomography: A Theoretical Consideration

Nakashima

Nakano

2020

Chemistry Africa

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We present a theoretical background for heavy element quantification through the intensive analysis of beam hardening (cupping artifacts) in X-ray computed tomography (CT) images. Cupping artifacts resulting from X-ray CT using a polychromatic X-ray source are quantitatively analyzed with an analytical solution for a cylindrical sample of a homogeneous aqueous solution/suspension containing a heavy element. The theoretical solution reveals that the severity of cupping artifacts is strongly dependent on the sample chemistry and the acceleration voltage of the X-ray tube. Careful analysis of this dependency enabled simultaneous determination of the atomic number and molar concentration of the heavy element within a particular estimation error range. Significant improvement in terms of the accuracy of determining the atomic number was achieved by employing double-exposure X-ray CT.

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Section: Introductionmentioning

confidence: 99%

Nondestructive Quantification of Heavy Elements Through the Analysis of Beam Hardening Artifacts Using Double-Exposure X-ray Computed Tomography: A Theoretical Consideration

Nakashima

Nakano

2020

Chemistry Africa

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“…If quantitation is required, significant care needs to be taken to ensure the calibration of the instrument is suitable for the application at hand and detection limits are appropriately defined (Kalnicky & Singhvi, ). Although detection limits are usually higher than the equivalent laboratory‐based elemental analysis system (Galuszka et al, ; Christine Vanhoof, Bacon, Ellis, Vincze, & Wobrauschek, ), detection limits are still sufficiently low to allow trigger values for site remediation and clean‐up to be applied (Kalnicky & Singhvi, ; Melquiades & Appoloni, ). The in‐situ analysis using the portable XRF also results in higher uncertainties, but this can be acceptable if the speed of analysis outweighs these uncertainties, especially for intelligence gathering purposes (Galuszka et al, ; Taylor et al, ).…”

Section: Field‐portable Equipment and Its Role In Environmental Forenmentioning

confidence: 99%

The evolution of environmental forensics: From laboratory to field analysis

Spikmans

2019

WIREs Forensic Science

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Environmental forensics aims to provide investigations into pollution incidents to establish the source of the pollution and any environmental or human health impacts. Casework is strongly reliant on field investigations and subsequent laboratory‐based analysis for confirmation of pollutants present. Current advances in field‐portable instrumentation are shaping the environmental forensics discipline and provide an evolutionary change in the operational capabilities of environmental investigators. The implementation of field‐portable equipment into the environmental investigative framework provides great advances and opportunities, but also needs to be performed with caution to ensure reliable results. Combining the use of field‐portable instrumentation with small mobile forensic laboratories provides for a rapid and flexible emergency response capability that can also be applied to non‐emergency scenarios to aid pollution mapping and tracking, including source determination. The field‐portable equipment can be used in the controlled environment of the mobile laboratory, but can also be used in‐situ where required. Although field‐portable equipment is not likely to replace laboratory‐based analysis methods in the near future, it does provide important intelligence to the field investigator, resulting in a more targeted and detailed investigation of the scene. This allows for a more focussed laboratory‐based investigation and will result in more rapid and appropriate investigations into environmental incidents. Ultimately, this will ensure a better protection of the environment and human health. This article is categorized under: Forensic Chemistry and Trace Evidence < Forensic Food and Environment Analysis

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“…As a technique for determining the existence of elements, X-ray fluorescence (XRF) spectrometry has been widely used in scientific researches and engineering fields [21][22][23][24]. XRF spectrometry can be divided into wavelength-dispersive XRF (WD-XRF) and energy-dispersive XRF (ED-XRF).…”

Section: Introductionmentioning

confidence: 99%

“…XRF spectrometry can be divided into wavelength-dispersive XRF (WD-XRF) and energy-dispersive XRF (ED-XRF). WD-XRF is developed for qualitative and quantitative analyses of elements with atomic number ≥ 4 (Be), which features the quantitative function provided that samples are properly prepared and calibration is strictly operated; while ED-XRF is applicable for qualitative and semi-quantitative analyses of elements from atomic number 9 (F) to 92 (U) in principle [25], which features quick and sensitive measurement without pretreating or touching samples, just fitting in with the needs of the museum field [24]. The metallic elements in alloy-based artefacts [26,27], antique polychromy [28], paintings [29,30] and porcelains [31,32] were all successfully detected by different types of XRF measurement.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the occurrence of portable XRF analysers has further expanded the application of XRF spectrometry in various walks of life [33]. Especially, their cultural heritage applications have attracted even more attentions [24,33]. Higher portability makes them more suitable for field detection, which is just a special demand of museums [33,34].…”

Section: Introductionmentioning

confidence: 99%

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Nondestructive identification of gemstones by using a portable XRF–XRD system: an illuminating study for expanding its application in museums

Shen

2020

SN Appl. Sci.

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Nine gemstone samples were analysed by using a portable X-ray fluorescence-X-ray diffraction (XRF-XRD) system without any destructive preparation processes. The samples were measured by groups based on the transparency and the complexity of molecular structure. The XRF and the XRD measurements for each sample were performed simultaneously.The key experimental parameters were optimized in order to obtain XRD patterns acceptable for phase identification in a limited time. The XRF spectrum of each sample was analysed first to acquire the elemental composition qualitatively, and the information was then applied to refining possible phases. The phase analysis process of each sample was described in detail and the most likely phases were determined. Normal XRD experiments were conducted in order to verify the results. Advantages, disadvantages and applicable range of the system were analysed. The results indicate that the portable XRF-XRD system can be applied to identifying particular gemstones effectively, while single-crystal gems may not be identified very well. Wider recognition and application of the portable XRF-XRD system in cultural heritage and gemological fields call for hardware development, software updating and more real application cases.

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2018 atomic spectrometry update – a review of advances in X-ray fluorescence spectrometry and its special applications

Abstract: This review covers developments in and applications of XRF techniques such as EDXRF, WDXRF, TXRF, XRF microscopy using technologies such as synchrotron sources, X-ray optics, X-ray tubes and detectors in laboratory, mobile and hand-held systems.

Cited by 32 publications

References 118 publications

Nondestructive Quantification of Heavy Elements Through the Analysis of Beam Hardening Artifacts Using Double-Exposure X-ray Computed Tomography: A Theoretical Consideration

Nondestructive Quantification of Heavy Elements Through the Analysis of Beam Hardening Artifacts Using Double-Exposure X-ray Computed Tomography: A Theoretical Consideration

The evolution of environmental forensics: From laboratory to field analysis

Nondestructive identification of gemstones by using a portable XRF–XRD system: an illuminating study for expanding its application in museums

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