Size and shape particle analysis by applying image analysis and laser diffraction - Inhalable dust in a dental laboratory

作者：Ilic Milana^*; Budak Igor; Vasic Milica Vucinic; Nagode Ales; Kozmidis Luburic Uranija; Hodolic Janko; Puskar Tatjana

来源：Measurement, 2015, 66: 109-117.

DOI：10.1016/j.measurement.2015.01.028

• Inhalable dust
• Particle shape
• Particle size distribution
• Laser diffraction
• Image analysis
• Scanning electron microscopy

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.

• 出版日期2015-4