Abstract
Ozone emission factors were developed for domestic electrostatic air cleaners and photocopying machines. The air cleaners had emission rates from 0-546 microgram/min. These rates will ordinarily not produce air concentrations which are greater than 60 microgram/m3 (0.030 ppm) above background. The emission rate for photocopying machines varied from 48-158 microgram/copy. In small, poorly ventilated rooms these emission rates were sufficient to produce incremental steady state ozone concentrations up to 396 microgram/m3 (0.202 ppm). Recent copying machine maintenance was found to reduce ozone production to less than the detectable level, 4 microgram/m3 (0.002 ppm).
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