本文中，连续两周的测试被对大连市某商场车库局部区域进行，并对影响颗粒物

In this paper, the two weeks of testing in a mall garage is on the local area in Dalian conduct, and the main factors affecting the mass concentration of particulate matter were analyzed. The research shows that the distribution of vehicles and Day presents a significant M-type curve, peaked at 12:00 and 18:00. <br>During the test 8:00 ~ 22:00 period, PM2.5 concentration in excess of rate of 54.8%, PM10 concentration in excess of 22.2%. <br>As it can be seen from the garage PM1.0 value / PM10 and PM2.5 / PM10, the small size particles are main sources of indoor garage. <br>Effect of humidity on the maximum concentration of particulate matter, followed by an average value h PM2.5 outdoor weather, number of vehicles, the temperature has little effect on the particle concentrations. <br>[Keywords] mall garage; particle contamination; traffic; thermal environment; Found field; Correlation

In this paper, two consecutive weeks of testing was carried out on the local area of garage in a shopping mall in Dalian, and the main influencing factors affecting the mass concentration of particulate matter were analyzed. Through the study, it is found that the daily distribution of vehicles and personnel shows a distinct M-shaped change curve, peaking at 12:00 and 18:00.<br>During the test period from 8:00 to 22:00, the PM2.5 concentration exceeded the standard rate reached 54.8%, and the PM10 concentration exceeded the standard rate reached 22.2%.<br>From the values of garage PM1.0/PM10 and PM2.5/PM10, it can be seen that the particles of small particle size are the main source of pollution in indoor garages.<br>Humidity has the greatest influence on particulate concentration, followed by outdoor meteorological PM 2.5 hours average, number of vehicles, temperature has little effect on particulate concentration.<br>Shopping mall garage; particulate pollution; traffic flow; hot environment; on-site testing; relevant analysis

In this paper, the continuous two-week test was carried out in a local area of a shopping mall garage in Dalian, and the main influencing factors of particle mass concentration were analyzed. Through the research, it is found that the daily distribution of vehicles and people presents an obvious M-shaped curve, reaching the peak at 12:00 and 18:00.<br>During the period of 8:00-22:00, the over standard rate of PM2.5 and PM10 reached 54.8% and 22.2% respectively.<br>From the values of pm1.0/pm10 and pm2.5/pm10 in the garage, it can be seen that the particles with small particle size are the main pollution sources of the indoor garage.<br>Humidity has the greatest influence on the concentration of particulate matter, followed by outdoor meteorological PM2.5 hourly average value, vehicle number, and temperature has little influence on the concentration of particulate matter.<br>[Key words] shopping mall garage; particle pollution; vehicle flow; thermal environment; field measurement; correlation analysis