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2667129 
Journal Article 
Respirable crystalline silica: Analysis methodologies 
Gomez-Tena, MP; Zumaquero, E; Ibanez, MJ; Machi, C; Escrig, A 
2012 
51 
2 
119-126 
WOS:000304225600009 
This paper describes different analysis methodologies in occupational environments and raw materials. A review is presented of the existing methodologies, the approximations made, some of the constraints involved, as well as the best measurement options for the different raw materials. In addition, the different factors that might affect the precision and accuracy of the results are examined.



With regard to the methodologies used for the quantitative analysis of any of the polymorphs, particularly of quartz, the study centres particularly on the analytical X-ray diffraction method. Simplified methods of calculation and experimental separation are evaluated for the estimation of this fraction in the raw materials, such as separation methods by centrifugation, sedimentation, and dust generation in controlled environments.



In addition, a review is presented of the methodologies used for the collection of respirable crystalline silica in environmental dust. 
Respirable crystalline silica; raw materials; deposition methods; non destructive test; diffraction methods