雾霾灾害性天气是当前我国面临的一个严重问题，为此建立简单、高效、低廉的方法用于气溶胶固体颗粒的高效收集和其中化合物高灵敏度分析对于雾霾研究具有重要意义。本课题将通过多种无机/有机吸附剂对滤纸表面的修饰和不同物理化学手段的系统表征，发展出一种对气溶胶颗粒具有独特吸附性能的滤膜；进而将吸附气溶胶颗粒的滤膜作为纸喷雾电离源基质，探究气溶胶颗粒中不同有机化合物在修饰滤纸上的滞留特性和电离性能，阐释特性参数与化合物电离效率之间的关系，特别是弱极性和非极性化合物，研制出一种对气溶胶颗粒中不同极性有机化合物具有较高电离效率的常压电离源技术，同时建立相应的纸喷雾电离源-质谱分析方法并用于不同时空段收集气溶胶颗粒样品的快速检测。本课题的开展将为气溶胶颗粒的高效收集和其中有机化合物的高灵敏度分析奠定方法学基础，同时也为材料科学与质谱分析的有效结合提供实验基础和理论依据。

Nowadays smog as a severe weather phenomenon has become a serious issue in China. Therefore, it is significant to develop some simple, high-efficient and low-cost techniques for collection of aerosol particles and subsequent high-sensitivity analysis of the components in them. In this project, a unique filter membrane for adsorption of aerosol particles in air will be first developed based on the modification of filter papers with various inorganic and organic adsorbents and characterization of different physicochemical techniques. Then the developed filter membrane with aerosol particles will be used as substrate for paper spray. After investigating the retention behavior and ionization law of various compounds in aerosol particles, especially the analytes with weak polarity and non-polarity, the relationship between the characteristic parameters and ionization efficiency will be elucidated. On the basis of these investigation, a method named as paper spray mass spectrometry will be developed for analyzing organic compounds with different polarities in aerosol particles, and will be used for analyses of different collected samples from various times, regions and sources. This project will offer a methodology for high-efficient collection of aerosol particles and for high-sensitivity analysis of different organic compounds in them. In addition, it will provide important experimental and theoretical bases for the combination of materials science and mass spectrometric analysis.