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Review

Review of Respirable Coal Mine Dust Characterization for Mass Concentration, Size Distribution and Chemical Composition

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Department of Mining and Metallurgical Engineering, University of Nevada, Reno, NV 89557, USA
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Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, USA
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Golder Associates Inc., Toronto, ON M5H 3R3, Canada
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College of Business, University of Nevada, Reno, Reno, NV 89557, USA
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Department of Mechanical Engineering, University of Nevada, Reno, Reno, NV 89557, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Emily Sarver
Minerals 2021, 11(4), 426; https://doi.org/10.3390/min11040426
Received: 23 February 2021 / Revised: 9 April 2021 / Accepted: 14 April 2021 / Published: 16 April 2021
Respirable coal mine dust (RCMD) exposure is associated with black lung and silicosis diseases in underground miners. Although only RCMD mass and silica concentrations are regulated, it is possible that particle size, surface area, and other chemical constituents also contribute to its adverse health effects. This review summarizes measurement technologies for RCMD mass concentrations, morphology, size distributions, and chemical compositions, with examples from published efforts where these methods have been applied. Some state-of-the-art technologies presented in this paper have not been certified as intrinsically safe, and caution should be exerted for their use in explosive environments. RCMD mass concentrations are most often obtained by filter sampling followed by gravimetric analysis, but recent requirements for real-time monitoring by continuous personal dust monitors (CPDM) enable quicker exposure risk assessments. Emerging low-cost photometers provide an opportunity for a wider deployment of real-time exposure assessment. Particle size distributions can be determined by microscopy, cascade impactors, aerodynamic spectrometers, optical particle counters, and electrical mobility analyzers, each with unique advantages and limitations. Different filter media are required to collect integrated samples over working shifts for comprehensive chemical analysis. Teflon membrane filters are used for mass by gravimetry, elements by energy dispersive X-ray fluorescence, rare-earth elements by inductively coupled plasma-mass spectrometry and mineralogy by X-ray diffraction. Quartz fiber filters are analyzed for organic, elemental, and brown carbon by thermal/optical methods and non-polar organics by thermal desorption-gas chromatography-mass spectrometry. Polycarbonate-membrane filters are analyzed for morphology and elements by scanning electron microscopy (SEM) with energy dispersive X-ray, and quartz content by Fourier-transform infrared spectroscopy and Raman spectroscopy. View Full-Text
Keywords: respirable coal mine dust; black lung; silicosis; size distribution; chemical composition respirable coal mine dust; black lung; silicosis; size distribution; chemical composition
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MDPI and ACS Style

Abbasi, B.; Wang, X.; Chow, J.C.; Watson, J.G.; Peik, B.; Nasiri, V.; Riemenschnitter, K.B.; Elahifard, M. Review of Respirable Coal Mine Dust Characterization for Mass Concentration, Size Distribution and Chemical Composition. Minerals 2021, 11, 426. https://doi.org/10.3390/min11040426

AMA Style

Abbasi B, Wang X, Chow JC, Watson JG, Peik B, Nasiri V, Riemenschnitter KB, Elahifard M. Review of Respirable Coal Mine Dust Characterization for Mass Concentration, Size Distribution and Chemical Composition. Minerals. 2021; 11(4):426. https://doi.org/10.3390/min11040426

Chicago/Turabian Style

Abbasi, Behrooz, Xiaoliang Wang, Judith C. Chow, John G. Watson, Bijan Peik, Vahid Nasiri, Kyle B. Riemenschnitter, and Mohammadreza Elahifard. 2021. "Review of Respirable Coal Mine Dust Characterization for Mass Concentration, Size Distribution and Chemical Composition" Minerals 11, no. 4: 426. https://doi.org/10.3390/min11040426

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