کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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731083 | 1461521 | 2015 | 9 صفحه PDF | دانلود رایگان |
This paper focuses on particle characterisation using two different methodologies – laser diffraction and image analysis based on scanning electron microscopy. The experimental part of the research was conducted in a dental laboratory, using a personal sampler for dust sample acquisition. Within the image analysis, two parameters of particle size analysis were applied: MeanFeret’s diameter and an equivalent circle diameter. The particle shape is evaluated with respect to three factors: convexity, elongation, and circularity. The obtained particle size distribution, for both methods, showed that the majority of particles were respirable. In addition, the application of the energy dispersive X-ray spectroscopy method showed the presence of several hazardous substances in the workplace. Spearman’s rank correlation coefficients were calculated to determine how shape factors and particle size were related.
Journal: Measurement - Volume 66, April 2015, Pages 109–117