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Wood-burning stoves can emit pollution indoors during starting, stoking, and reloading operations. They can also emit pollution indoors if they are not airtight or are malfunctioning. Four woodburning stoves, three airtight and one non-airtight , were operated in a single-floor 236-m 3 residence and tested for pollutant emissions. Results showed the airtight stoves emitted small "puffs" of carbon monoxide and respirable suspended particles during door-opening operations while the non-airtight stove continuously injected pollutants indoors under certain operating conditions. During the non-airtight stove operation, carbon monoxide levels reached a maximum of 43 ppm while average suspended particulate concentrations ranged from a typical outdoor concentration of 30 ~g/m3 up to 800 ~g/m3. Five polycyclic aromatic hydrocarbons, including benzo(a}pyrene, were measured in the collected particulate samples and the results are reported. Source strengths for carbon monoxide, total suspended particles, and five polycyclic aromatic hydrocarbons are reported for each stove type.

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