【摘要】 2008年冬季采集大气中PM10和PM2.5样品,利用SPSS软件进行分析。结果表明,PM10质量浓度在92.87～384.7μg/m3之间,平均值为201.09μg/m3,超标率71.43%。PM2.5浓度跨度为57.27～230.21μg/m3,平均值为133.82μg/m3,超标率89.47%。PM10和PM2.5空间分布略有差异。PM2.5/PM10在29.10%～94.76%之间,均值为66.55%。PM2.5与PM10质量浓度之间有显著相关性,相关方程:PM2.5=0.7993×PM10-55.984(R2=0.9524,置信度为95%)。通过颗粒物形貌分析,初步判定冬季大气主要污染源为燃煤和机动车尾气排放。更多还原

【Abstract】 PM10 and PM2.5 were sampled and analyzed by SPSS in winter,2008.It shows that spatial distribution of PM10 and PM2.5 was different a little.Concentration of PM10 was among 92.87μg·m-3 ～ 384.7μg·m-3,average value 201.09μg·m-3,and the over standard rate 71.43%.And concentration of PM10 was among 57.27μg·m-3 ～ 230.21μg·m-3,average value 133.82μg·m-3,and the over standard rate 89.47%.The ratio of PM2.5 /PM10 was 29.10% ～ 94.76%,and average value was 66.55%.A good correlation between PM10 and PM2.5 was found with high coefficient as 0.95.Correlation equation was PM2.5 = 0.7993 × PM10-55.984(confidence 95%).Judging by their features,particulate matters mainly came from coal combustion and vehicle in winter.更多还原