Indoor–outdoor relationships of particulate matter and nitrogen oxides under different outdoor meteorological conditions

摘要: Abstract Respirable suspended particulate matter and nitrogen oxides concentrations were measured inside outside a student office in an urban location during 9-month period. Direct reading tapered-element oscillating microbalance (TEOM) instruments passive sampling techniques used to provide indoor outdoor hourly averages of the two pollutants The variations correlations pollutant indoor–outdoor (IO) ratio against various meteorological factors, namely temperature, humidity, pressure, wind speed solar irradiation studied. Using data-mining procedure, suitable sets data amassed grouped together study effect these individual weather parameters on IO ratio. It is found through statistical regression that humidity play vital role variation In fact, shows convincing tendency increase with three parameters. On other hand, both pressure seems have relatively little