Asbestos Mineral Analysis by UV Raman and Energy‐Dispersive X‐ray Spectroscopy

Petry, R.; Mastalerz, Remigius; Zahn, Stefan; Mayerhöfer, Thomas G.; Völksch, Günther; Viereck‐Götte, Lothar; Kreher-Hartmann, Birgit; Holz, L.; Lankers, M.; Popp, Jürgen

doi:10.1002/cphc.200500303

Cited by 20 publications

(9 citation statements)

References 22 publications

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“…Their results and the use of EDX analysis shed new light on the structural and vibrational consequences of cation distribution in asbestos minerals. 51 Moreover, in 1989 a paper reported the use of EDX method to measure the environmental air concentrations of asbestos and total mineral fibers during the period June-July 1985 in several locations near a large asbestos-cement factory located in the proximity of a northern Italian town. Specifically, authors did the measurements of the number and type of fibers by SEM-EDX analysis.…”

Section: Edx Microanalysis In Asbestos Isotype Characterizationmentioning

confidence: 99%

Energy Dispersive X-ray (EDX) microanalysis: A powerful tool in biomedical research and diagnosis

Scimeca¹,

Bischetti²,

Lamsira³

et al. 2018

Eur J Histochem

247

192

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The Energy Dispersive X-ray (EDX) microanalysis is a technique of elemental analysis associated to electron microscopy based on the generation of characteristic Xrays that reveals the presence of elements present in the specimens. The EDX microanalysis is used in different biomedical fields by many researchers and clinicians. Nevertheless, most of the scientific community is not fully aware of its possible applications. The spectrum of EDX microanalysis contains both semi-qualitative and semi-quantitative information. EDX technique is made useful in the study of drugs, such as in the study of drugs delivery in which the EDX is an important tool to detect nanoparticles (generally, used to improve the therapeutic performance of some chemotherapeutic agents). EDX is also used in the study of environmental pollution and in the characterization of mineral bioaccumulated in the tissues. In conclusion, the EDX can be considered as a useful tool in all works that require element determination, endogenous or exogenous, in the tissue, cell or any other sample.

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Section: Edx Microanalysis In Asbestos Isotype Characterizationmentioning

confidence: 99%

Energy Dispersive X-ray (EDX) microanalysis: A powerful tool in biomedical research and diagnosis

Scimeca¹,

Bischetti²,

Lamsira³

et al. 2018

Eur J Histochem

247

192

View full text Add to dashboard Cite

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“…There are several publications, in which the Raman scattering below 1,200 cm −1 has been used to fingerprint amphibole species, and attempts have been made to establish a correlation between the framework spectral features and chemical composition of amphiboles. [23][24][25][26][27][28][29][30] However, most of the studies reported so far are either concerned with a restricted set of samples [24][25][26]28] or focused only on the compositional dependence of the strong Raman peak near 670 cm −1 , [26,28] which originates from the TO 4 -ring-breathing mode. [27] Moreover, the compositional variation of the position of the peak near 670 cm −1 has been ambiguously attributed to different chemical substitutions.…”

mentioning

confidence: 99%

Nondestructive determination of the amphibole crystal‐chemical formulae by Raman spectroscopy: One step closer

Waeselmann

Schlüter

Malcherek

et al. 2019

J Raman Spectroscopy

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We present the results of a comprehensive study linking the crystal‐chemical formulae of amphiboles, a series of extremely complex silicates with the general formula (AB2C5T8O22W2, C5 = M12M22M3) to variations in the peak positions, widths, and intensities of the Raman‐active modes. To this purpose, we have analyzed the Raman scattering generated by the framework vibrations (15–1,215 cm−1) and by the OH‐stretching modes (3,000–4,000 cm−1) of 44 samples, spanning all six major subgroups. We show that, in addition to the information that can be derived from the OH‐stretching range (Leissner et al., Am. Mineral. 2015, 100, 2682), further important features of the amphibole structure, composition, and cationic site population can be directly extracted from the framework Raman spectrum, namely, (a) the distinction between the monoclinic and orthorhombic symmetries; (b) the estimation of TAl content, when TAl > 0.5 apfu; (c) the estimation of CTi content, when CTi > 0.3 apfu; (d) the estimation of CLi content, when CLi > 0.3 apfu; (e) the detection of CAl, when CAl > 0.7 apfu; (f) an estimate of CMg; (g) the estimation of CFe3+ in the case of Na amphiboles; and (h) the estimation of the Fe2+ content at the M2 site in the case of Mg–Fe–Mn amphiboles. Additionally, we point out that the TO4‐ring‐breathing mode near 670 cm−1, which is commonly used to fingerprint various amphibole species, has to be handled with a great care, because it is sensitive to the site population at all crystallographic sites.

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“…Raman analysis (up to 360 nm @ =532nm [31]) let the analyst confirm the mineralogical nature of the fibers [47,55] and determine whether this mineral is on the list of regulated asbestos mineral fibers. RISE microscopy also makes it possible to obtain a 3D view of the distribution of each mineral that is present in a volume of several thousand cubic micrometers.…”

Section: Discussionmentioning

confidence: 99%

Coupling SEM-EDS and confocal Raman-in-SEM imaging: A new method for identification and 3D morphology of asbestos-like fibers in a mineral matrix

Lahondère¹,

Schmidt²,

Duron³

et al. 2019

Journal of Hazardous Materials

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Asbestos consists in natural minerals crystallized in a specific habit and possessing in particular properties. In the case of Naturally Occurring Asbestos, usual methods applied to the identification of mineral fibers and the determination of their possible asbestiform nature seems not efficient, especially in the case of mineral fibers included in mineral matrix.We present a new in-situ method based on the use of confocal Raman-in-SEM imaging implemented in a Scanning Electron Microscope as an efficient method for in-situ mineralogy. The limitation of conventional methods is discussed. We applied 2D-Raman imaging to the identification of sub-micrometric fibers included in different mineral matrix. We were able to identify actinolite fibers down to 400 nm in diameter, included in feldspar, quartz and/or calcite matrix. HighlightsNew methods are requested for characterizing asbestos fibers in a mineral matrix SEM-Raman imaging is efficient for characterizing mineral fibers in-situ Confocal Raman imaging makes 3D analysis possible 3D analysis provides information on the aspect ratio and volume fraction of asbestos Fibers thinner than 400nm can be identified by confocal Raman in SEM ( = 532 nm) Keywords in-situ asbestos diagnosis; Raman-in-SEM imaging; naturally occurring asbestos; 3D analysis; fibrous amphiboles;

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Asbestos Mineral Analysis by UV Raman and Energy‐Dispersive X‐ray Spectroscopy

Cited by 20 publications

References 22 publications

Energy Dispersive X-ray (EDX) microanalysis: A powerful tool in biomedical research and diagnosis

Energy Dispersive X-ray (EDX) microanalysis: A powerful tool in biomedical research and diagnosis

Nondestructive determination of the amphibole crystal‐chemical formulae by Raman spectroscopy: One step closer

Coupling SEM-EDS and confocal Raman-in-SEM imaging: A new method for identification and 3D morphology of asbestos-like fibers in a mineral matrix

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