The some results of study on outdoor and indoor ambient PM_2.5

Abstract

In this study, PM_2.5 pollution of indoor and outdoor ambience has been measured on a household which is located between the Ger area and the residential district at simultaneous duration and point. In order to analyze, we used n = 3,119,500 data which was measured at each 10 second during 24 hours period. The instrument that was used to study, created by Nagoya University and Panasonic Corporation. In recent years, the capital of Ulaanbaatar, Mongolia, is leading the air pollution during the winter in the world, and the majority of this pollution is comprised of PM_2.5 . Fine particles are very harmful to human health, and people spend approximately 90% of their lives in the indoor ambient. Thus, it is important to measure continuously the amount of indoor and outdoor PM_2.5, so we have selected two points and indicated some statistical analysis on indoor and outdoor ambient. The results of this study indicate the PM_2.5 concentrations of air in Ulaanbaatar are higher than the air quality standard in October and peak in the December and January. Also, due to the feature of the sites being measured, pollution of indoor ambient was demonsrated strong or weak level, which is depended on outdoor ambient pollution. The measurements of the majority days were a high level of pollution from at 00:00 to 04:00 pm, however, it was decreased at 5:00 pm, but it started to increase around 07:00 to 09:00 in the morning, and it decreased from 10:00 am to low level of the pollution whole day. At 18 o’clock in the evening, the pollution was increasing and at the peak of the day, the fine particle pollution up to 02:00 on the next day.