为了研究青浦城厢地区可吸入颗粒物污染状况，分析了2005年至2010年空气质量资料，结果表明：青浦城厢地区首要污染物为PM。其质量浓度呈逐年下降趋势。PM10浓度的月度变化幅度比较大，全年PM10浓度及超标率呈现“高一低一高”的变化趋势。春、冬季比较高，夏、秋季比较低。PM10质量浓度的日变化非常明显，呈现出“双峰”状分布。PM2.5和PM10的平均比值为0．531，表明该地区可吸人颗粒物中细颗粒物的比例较高，细颗粒物对人群的健康影响更为严重。PM10和PM2.5各月日均值之间和各月均值之间均呈高度相关，线性关系非常显著，二者之间回归直线关系存在，可用回归方程y=ax＋b进行计算。%In order to study the PM10 pollution status of Chengxiang area in Qingpu Distric ,this paper analyses the air quality data from 2005 to 2010. The results show that：The primary pollutant is PM10 and its concentration decreases year by year. The concentration of PM10 changes drastically monthly. The concentration of PM10 and its over - limit rate show a change trend as ＂high--low--high＂. The concentrations in spring and summer are relatively high, while those in autumn and winter are relatively low. The daily variation of PM10 concentration is very obvious, presenting a ＂Double peak＂ shape distribution. The average ratio of PM2.5 and PM10 is 0. 531, indicating a higher proportion of fine particulate matters in inhalable particles, which have more serious human health impacts. The monthly averages and daily averages of every month of PM10 and PM2.5 are highly correlated, showing a significant linear relationship. There exists a linear regression relationship, which can be calculated via the equation：y =ax ＋b.
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