我国典型区域PM2.5化学组分特征及来源解析

京津冀、长三角、珠三角三大都市圈是我国经济发展较快的地区,GDP比重占全国40%左右,经济相对发达,人口相对稠密,污染相对严重,而PM2.5一直是大气环境中的主要污染物。近年来国内学者主要是针对PM2.5质量浓度水平、时空分布、化学组分等方面进行了研究。文章对这三个地区大气颗粒物PM2.5化学特性以及来源进行比较分析,有助于提出对PM2.5的一系列控制措施。

PM2.5 chemical component characteristics and source apportionment in our domestic typical areas

Three great metropolises of Beijing-Tianjin-Hebei region, Yangtze River Delta, Pearl River Delta are areas with faster economic development in our country, GDP proportion accounts for 40% of the whole nation, the economy is relatively developed, the population is relatively dense, the pollution is relatively serious, and PM2.5 has always been the main contaminant in the atmosphere. In recent years, domestic scholars have mainly studied the quality density level, space-time distribution, chemical component and other aspects of PM2.5. The paper makes the comparative analysis on PM2.5 chemical characteristics and origins of atmospheric pollutants in these three regions, which is beneficial to the proposal of a series of control measures of PM 2.5.