Based on the box model used in atmospheric Science, Calculation of indoor airpollutionconcentration had been developed and it's effect factors were discussed as well.
Authorities measure the concentration of particulates with a diameter of less than 10 microns - so-called PM10 - in the air to determine pollution levels.
检测机构会检测直径小于10微米的微粒，即PM 10浓度，并由此判定污染程度。
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Objective to study distribution of airpollution source, determine the historical exposure concentration of airpollution in the region, and assure the work scope of health investigation.