单颗粒气溶胶质谱仪在苏州市污染过程分析中的应用

Application of Single Particle Aerosol Mass Spectrometry in the Analysis of Atmospheric Pollution Processesin Suzhou

利用单颗粒气溶胶质谱仪,分析了苏州市环境空气中的整体细颗粒物的化学组分。通过对2015年夏季苏州市出现的两次污染过程的在线颗粒物化学组分和来源分析,初步探讨了两次污染过程主要来源和成因。研究表明:第一次污染过程是由于扬尘、机动车尾气和燃煤源联合作用导致的,而燃煤源是第二次污染过程中污染物的主要来源。

By using single particle aerosol mass spectrometry, the article analyzes the chemical opponent of the entirefine particles in the ambient environment of Suzhou. Through the online chemical opponent analysis and source identification of fine particles collected during the two atmospheric pollution processes occurred in the summer of 2015, the articlediscussesthe pollution sources and major causes. The study indicates that thecombined effects of dust particles, motor vehicle exhaust and coal combustionresult in the first pollution process,while the coal combustion is the major cause of the second pollution process.