安徽大学学报（自然科学版）2026，Vol.50Issue(3)：69-77,9.DOI:10.3969/j.issn.1000-2162.2026.03.010
典型港口城市大气PM2.5组分特征及来源解析
The characteristic and source apportionment of atmospheric PM2.5 in a typical port city
摘要
Abstract
To investigate the chemical composition and pollution sources of atmospheric PM2.5 in coastal port cities,PM2.5 samples collected in Liangyungang City from December 2020 to January 2021 during the winter heating period were analyzed.The results showed that the main chemical components of PM2.5 in Lianyungang include organic carbon(OC),elemental carbon(EC),water-soluble ions(SO42-,NO3-,NH4+),and crustal elements(Si,Al),with OC and EC making up a significant proportion.Strong correlations between OC and EC were observed under both clean and polluted conditions.Source apportionment indicated that the main sources of PM2.5 were secondary formation(24.6％),motor vehicle emissions(21.1％),coal and biomass combustion(17.2％),industrial sources(14.5％),ship emissions(11.9％),dust(5.9％),and marine sources(4.8％).Backward trajectory analysis identified eastern Shandong,northern Anhui,and central Jiangsu as potential source regions.To better control PM2.5 pollution,it is recommended that port cities strengthen regional cooperation,especially during winter heating,by sharing air quality data with neighboring cities.Promoting green transportation and energy transition,along with stricter control of port and ship emissions,will help improve air quality and provide guidance for pollution control in other coastal port cities.关键词
连云港市/PM2.5/化学组分/源解析/后向轨迹Key words
Lianyungang City/PM2.5/chemical components/source apportionment/backward trajectory分类
资源环境引用本文复制引用
赵丰旺,刘涛涛,李林,李子俊,朱承驻..典型港口城市大气PM2.5组分特征及来源解析[J].安徽大学学报（自然科学版）,2026,50(3):69-77,9.基金项目
安徽省自然科学基金资助项目(2023hb0005) （2023hb0005）
中央高校基本科研业务费项目(JZ2025HGTA0148) （JZ2025HGTA0148）
