This study characterised and analysed form factor, elementary composition and particle size of wood dust, to understand its harmful health effects on carpenters in Quindio (Colombia). Once particle characteristics (size distributions, aerodynamic equivalency diameter (Da), elemental composition and shape factors) were analysed, particles were then characterised via SEM in conjunction with energy dispersive x-ray analysis (EDXRA). SEM analysis of particulate matter showed: cone-shaped particle ranged from 2.09 to 48.79 ímDa; rectangular prism-shaped particle from 2.47 to 72.9 ím Da; cylindrically shaped particle from 2.5 to 48.79 ím Da; and spherically-shaped particle from 2.61 to 51.93 ím Da. EDXRA reveals presence of chemical elements from paints and varnishes such as Ca, K, Na and Cr. SEM/EDXRA contributes in a significant manner to the morphological characterisation of wood dust. The type of particles sampled is a complex function of shapes and sizes of particles. The authors concluded that it is therefore important to study the influence of particles characteristics, morphology, shapes and Da that may affect the health of carpenters in Quindio. Authors: Yepes, Milena Elizabeth Gomez; Cremades, Lazaro V.
Full Source: Industrial Health 2011, 49(4), 492-500 (Eng) ;