概述了国内外关于大气环境中PM2.5的研究进展。针对目前国内大部分城市阴霾天气日益加重，国内相关部门和领域更加重视PM2.5的监测和研究现状，调研了国内外大气环境领域关于PM2.5的研究情况，提出改善空气质量、加强PM2.5研究的建议。介绍了PM2.5的定义，指出PM2.5对人体健康和能见度的不利影响。国内关于PM2.5的研究工作包括：分析PM2.5与气象条件的关系；PM2.5的观测特征以及成分和来源分析；开展PM2.5的数值模拟。叙述了沈阳地区关于PM2.5的研究现状，提出改善沈阳城市大气环境的措施，包括加强PM2.5的连续监测，调整产业结构和布局，提高能源效率，发展洁净能源、减少煤炭消费和防治机动车尾气污染。%Study progress on PM2.5 in atmospheric environment was summarized at home and abroad. Now, the ur- ban haze weather is increasing in most cities of China, so the PM2. 5 monitoring and the corresponding studies became a main focus in relevant departments in China. The current status of PM2. 5 study was summarized, and some advices were brought up such as improving air quality and enhancing the corresponding studies on PM2. 5 The deftnition of PM2. 5 was introduced, and the disadvantageous effects of PM2.5 on the human health and visibility were revealed. The studies on PM2.5 could be divided into three types in China, namely, analyzing the relationship be- tween PM2. 5 and meteorological conditions;discussing the characters of PM2. 5 and its source;simulating the values of PM2.5 with the numerical model. The evolution of studies on PM2.5 in Shenyang region was reviewed and some measurements were suggested such as ensuring the continuous monitoring to PM2. 5, adjusting the structure and the layout of industry, improving the energy efficiency, developing the clear energy, decreasing the coal consumption and controlling the automobile exhaust pollution.
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