珠三角夏秋季节大气颗粒物与碳黑气溶胶污染特征的研究

以珠三角地区4个区域监测站2012年夏秋季节监测结果为例，分析该地区不同粒径大气颗粒物（PM10／PM2．5／PM1）和碳黑气溶胶（BC）质量浓度的变化特征。结果显示，区域内不同站点之间或站点不同粒径颗粒物之间均有显著的相关性，该地区PM，和BC质量浓度约占PM2．5的70％和8．2％，PM1，约占PM10的68％。秋季污染天气中，PM1质量浓度的增长量大于其他粒径颗粒物的增长量。颗粒物浓度与大气能见度的影响分析显示，碳黑气溶胶质量浓度增大与能见度降低关系密切。

Characterization of Atmospheric Particle and Black Carbon Pollution during Summer-fall in Pearl River Delta

By analyzing the data from four regional sites of Pearl River Delta during summer and fall in 2012, this paper stud- ied the mass concentration characterization of atmospheric particle of different sizes （PMlo/PM2.5/PM1 ） and black carbon （BC） pollution. Results showed that the correlation between data of different sites or particle in different sizes is significant. The ratios of PM1 and BC concentration to PM2.5 concentration are 70% and 8. 2%, and PM2.5 to PMI0 is 68%. During the air pollution days in fall, the increment of PM1 concentration is larger than the particle of the other sizes. Analysis of particle concentration and at- mospheric visibility indicates that the effect of increasing BC concentration on visibility reduction is obvious.