Monitoring and analysis of PM_(10) at different districts of Urumqi City

Urumqi city is one of the inland cities of China with serious air pollution related with both sand storms and smog dusts originated from the burning coal in the heating period of winter and spring.On the basis of monitored data obtained from three sampling points in Urumqi city during the period from May of 2007 to March of 2008,this paper researched on air pollution of the city in winter and spring,which deals with pollution particles,their concentration,temporal and spatial variation,and the relationship between pollution and synoptic conditions.Results show as follows:(1) the pollution level in the heating period is higher than that in the non-heating period;(2) the ranking of the PM10 concentration at three monitoring points is in the order of Tianshan District(monitoring point located at Urumqi Institute of Desert Meteorology) Sayibake District(monitoring point located at Xinjiang Medical University) Xinshiqu District(monitoring point located at Urumqi Meteorological Satellite Ground Station) in the heating period;(3) PM10 concentration at three monitoring points is almost the same in the non-heating period;(4) there are a negative relation between PM10 concentration and air temperature and a positive relation between PM10 concentration and air humidity.