Cooking as a source of ine particles: experiments in a townhouse

摘要

Experiments were carried out in an occupied townhouse to determine a) the effects of cooking on fine (PM_(3,5)) particle concentrations indoors; and b) the decay rate on interior surfaces of aerosols created by heating cooking oils. It was found that cooking with oil could elevate fine particles by amounts ranging between 10 and 10 #mu# g/m~3, and a few seconds with the oil hot enough to emit visible smoke were sufficient to elevate kitchen levels to between 300 and 1000 #mu# g/m~3. Seven experiments to determine the decay rate k of PM_(3.5) particles on interior surfaces resulted in a value for k of 0.33 (SD chemical bounds 0.08)h~(-1). This value was in agreement with the value for PM_(2.5) particles of 0.39 (0.18) h~(-1) estimated from statistical analyses of 178 Riverside, CA homes.