上海嘉定区PM10污染状况分析

对嘉定两个站点PM10进行连续监测，研究结果表明：气象条件是浓度变化的主要因素，两地区11月、12月和1月浓度较高，与该季节污染物扩散条件差有关；3月、4月和5月浓度较高，与春节北方沙尘有关，而在扩散条件不佳的2月浓度不高与每年该月的雨水较多有关。

PMl0 Pollution Status in Jiading District of Shanghai

The continuous monitoring of PM10 has been conducted at the two points in Jiading District. The research results show that the meteorological conditions are the main cause of the concentration change. In November, De- cember and January, the concentrations at the two points are high when the weather conditions are not favorable for the diffusion of the pollutant. The concentration is still high in March, April and May because of the dust from the northern China. In February, the high concentration of the pollutant is related with the large amount of the precipi- tation.