Characterization of nanometer and ultrafine diesel aerosols in underground mining environment

CIM Montreal 2007
George Schnakenberg, Aleksandar Bugarski,
Abstract Substantial reductions in the exposure of underground miners to diesel particulate matter is achievable only through wide implementation of advanced diesel emissions control technologies, such as diesel particulate filter systems. Recent laboratory and field studies showed that these technologies are capable of substantial reductions in total particulate and elemental carbon mass emissions. It was also shown that these technologies substantially change the physical properties and chemical composition of diesel aerosols, potentially changing their toxicity. The objective of the project described in this paper is to identify and characterize the nanometer and ultrafine aerosols emitted by diesel engines and evaluate the effects of selected contemporary control technologies on physical properties and chemical composition of diesel aerosols emitted in the underground environment. The physical and chemical properties of the nanometer and ultrafine diesel aerosols are characterized through a series of engine/dynamometer tests in the NIOSH Lake Lynn Laboratory experimental mine. The knowledge obtained from this study should strengthen our understanding of the health implications related to exposure to diesel particulate matter and aid in assessing the potential of various control technologies for reducing this exposure.

Keywords: Diesel, exposure, Toxicity, aerosols, particulate
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