扫描电镜分析在大气颗粒物源解析中的应用

Application of Electron Microscopic Analysis for the Sources Apportionment of Atmospheric Particles

扫描电镜法作为大气颗粒物源解析的辅助方法,为源解析研究提供了定性和半定量的依据。运用扫描电镜法对吉林市采暖期和非采暖期的大气颗粒物样品以及源样品进行定性和半定量分析,将分析结果与CMB8.2化学质量平衡受体模型源解析结果进行比较,两者具有一致性。吉林市采暖期对TSP贡献较大的是扬尘和土壤风沙尘,非采暖期对TSP贡献较大的是土壤风沙尘和建筑尘。

As a source of atmospheric particulate matter supporting analytical method of source apportionment studies, scanning electron microscopy presents a qualitative and semi-quantitative basis. The scanning electron microscopy is used to do qualitative and semi-quantitative analysis of atmospheric particulate matter samples and the sample source during the heating and non-heating periods in Jilin City. These results are consistency well with those that gets from CMB 8.2 chemical mass balance recep- tor model for the source of analytical results. From the results, we know that the wind and soil dust sources contribute more portion to TSP in the heating period, while the soil dust and construction dust are the main sources of TSP in the non-heating period.