出版社：Chinese Association for Aerosol Research in Taiwan
摘要：Laboratory tests were conducted to characterize the composition of emissions from sandingCorian®, a solid-surface composite material mainly composed of alumina trihydrate (ATH) andacrylic polymer. Three sandpaper materials (ceramic, silicon carbide, and aluminum oxide) weretested to distinguish the contribution of aluminum-containing dust in the emission from Corian®and sandpaper itself. The result can help identify the main cause of the pulmonary fibrosis fromexposure to aluminum-containing dust while sanding Corian®. Airborne dust samples weremeasured using direct-reading instruments and collected using a Micro-Orifice Uniform DepositImpactor (MOUDI) for estimating the normalized dust generation rate. The size-classified dustsamples from MOUDI were analyzed for elemental aluminum content. Additionally, air sampleswere analyzed for characterizing methyl methacrylate (MMA). The results from the directreading instruments reveal that the size distribution of particulate from sanding Corian® differsfrom that of sawing Corian®, showing that the size distribution of dust is affected by thefabrication process. The normalized respirable dust generation rate indicates that morerespirable dust was generated during sanding Corian® board. However, the use of aluminumoxide sandpaper does not result in a higher aluminum content in the respirable dust from sandingCorian®, suggesting that the aluminum content of the respirable dust is primarily originated fromCorian® itself. The generation rates of MMA from sanding did not vary much among all types ofsandpapers, and they were much lower than that of sawing, likely due to the higher temperaturein the sawing process.
