基于激光雷达监测的太原市2022年3月份颗粒物组分分析

Analysis of Particulate Matter Composition in Taiyuan in March 2022 Based on Lidar Monitoring

基于气象条件及污染过程,从质量浓度重构、离子、OC/EC、元素等4个方面分析了太原市2022年3月份PM_(2.5)组分变化特征。结果显示,太原市3月份PM_(2.5)较上月明显增加,各化学组分中三大无机盐对PM_(2.5)的波动起主导作用,且其中硝酸盐对其浓度贡献为最高。

Based on meteorological conditions and pollution process,the change characteristics of PM_(2.5) components in Taiyuan City in March 2022 were analyzed from four aspects:mass concentration reconstruction,ions,OCEC,and elements.The results showed that the PM_(2.5) in Taiyuan City increased significantly in March compared with the previous month.The three major inorganic salts in the chemical components played a leading role in the fluctuation of PM_(2.5),and nitrate contributed the most to its concentration.