| 韩茜,魏文寿,刘新春,钟玉婷.乌鲁木齐市PM10,PM2.5和PM1.0浓度及分布变化特征研究[J].沙漠与绿洲气象,2015,9(1):32~38 |
| 乌鲁木齐市PM10,PM2.5和PM1.0浓度及分布变化特征研究 |
| Characteristic Research of the Concentration and Distribution of PM10, PM2.5 and PM1.0 in Urumqi City |
| 投稿时间：2013-12-13 修订日期：2014-02-13 |
| DOI： |
| 中文关键词: 乌鲁木齐市，颗粒物，日变化，分布 |
| 英文关键词:Urumqi city, particulate matter, distribution, diurnal variation |
| 基金项目:IDM201205,Sqj2012009 |
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| 中文摘要: |
| 通过对GRIMM180气溶胶粒谱分析仪采集乌鲁木齐市PM10，PM2.5和PM1.0数据进行分析，研究表明：乌鲁木齐市气溶胶颗粒物质量浓度在进入采暖季后急剧增加，冬季颗粒物中细粒子含量最高，PM2.5/PM10可达77.6%，PM2.5/PM10，PM1.0/PM10，PM1.0/PM2.5三比值体现了颗粒物的分布特征，四季污染程度越高，细粒子含量越高。四季无降水日PM10，PM2.5，PM1.0的质量浓度和分布的日变化基本呈三峰三谷型，出现早-午-晚峰值，上午-下午-午夜后谷值，各季节峰谷值具体出现时间略有差别，由于冬季逆温层顶盖等因素的影响，冬季质量浓度和分布的日变化在此基础上多了两次波动。降水的发生对冬、春季质量浓度的影响大于夏、秋季，对不同粒径段粒子的分布影响有一定差别。 |
| 英文摘要: |
| Through the analysis of GRIMM180 gathered PM10, PM2.5 and PM1.0 in Urumqi city, the result showed: the aerosol mass concentration in Urumqi increased rapidly after the heating season beginning, the content of fine particles is the highest, PM2.5/PM10 can reach 77.6%, PM2.5/PM10, PM1.0/PM10, PM1.0/PM2.5 represent the particle distribution, the more serious the pollution was, the higher the content of fine particles was in four seasons. In the non precipatation day, the diurnal variation curves of mass concentration and distribution of PM10, PM2.5 and PM1.0 basically show the pattern of “3 peak-3 valley” in four seasons, the peak value appeared at “morning-noon-evening”, and the valley values occurred at “after morning-afternoon-after midnight”. Due to the influences of temperature inversion and other factors in the winter, the mass concentration and distribution showed another two “peak-valley” based on the “3 peak-3 valley” pattern. The occurred of precipation had greater influences on the particulate matter mass concentration in winter and spring than in summer and autumn, and had different influences on the distribution of different diameter particles. |
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