Aim To determine the main source of dust pollution in the air in Shang Lan Area

to tackle the problem directly. Methods The particulate mass concentration in the air of all main functional areas during heating and unheating periods is meas the ured. Results The quantity of falling dust and raising dust and their component proportion in monitor point and the relationships between dust pollution and ambience humidity

temperature

wind derction and surroundings are determined. Conclusion The dust pollution is chiefly caused by soot and raising dust from the ground.