WEST VIRGINIA UNIVERSITY RESEARCH CORPORATION
The Wide Spectrum Aerosol Classifier will be used by several of the classes that the Occupational Medicine Residents will be required to take as part of a new Master of Health Sciences major in occupational health. The device is able to assist in the generation and analysis of particle size distributions. This will be used in the dose assessment course to provide real data to analyze the effect of the change of particle size on lung deposition. This allows the students not only to determine the deposition rate but also to determine the parameters of the size distribution for selected particles such as diesel exhaust, coal dust and metal oxide powders and certain operations such as grinding, cutting, welding and internal combustion. These operations can be run with and without certain controls and the results of the controls viewed in real time as the student experiments with optimizing the control parameters. The results can be compared to results obtained from simpler but more widely used sampling systems to help the student understand the limitations of the simpler samples and the strengths and limitations of the data derived from the simpler samples. This will also better exemplify the operation of the samples demonstrated in the industrial hygiene courses in the curriculum. The student should, therefore, better understand the nature, the strength and the limitations of particle sampling data that are used to develop dose-response relationships.