空气中臭氧的共振瑞利散射光谱新方法研究

项目名称： 空气中臭氧的共振瑞利散射光谱新方法研究

项目编号： No.21307017

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 环境科学、安全科学

项目作者： 温桂清

作者单位： 广西师范大学

项目金额： 25万元

中文摘要： 一方面，探究高效、选择性好的吸收剂吸收气态臭氧；研究可与臭氧氧化产物进一步反应生成纳米微粒且其共振瑞利散射（RRS）效应灵敏的的纳米反应物；考察吸收剂、表面活性剂、纳米反应物、盐和pH值等对测定体系的影响，建立快速、简便、灵敏度高的测定臭氧的RRS新方法并用于大气和室内空气样品分析。另一方面，制备稳定、小粒径的金属纳米粒子，考察纳米微粒直接与臭氧反应的RRS光谱特性及纳米催化反应特性，优化分析条件，建立臭氧的RRS新方法，即利用臭氧直接与金属纳米粒子反应和纳米催化反应来发展臭氧的RRS光谱分析；利用RRS光谱、UV-Vis光谱和电镜等多种表征手段探索臭氧与吸收剂、吸收液与探针等反应的反应动力学及相关反应机理；考察其反应作用位点及影响因素，探索臭氧测定反应的理论依据。

中文关键词： 共振瑞利散射光谱；纳米粒子；臭氧；测定；环境污染物

英文摘要： On one hand, absorbents will be investigated and the high efficient and selective ones will be selected to absorbed atmospheric ozone . Then, the componds which can reacted with the ozone absorber to form nanoscale association would be selected and relation between the RRS spectra and the ozone concentration would be study. The new RRS methods for atmospheric ozone will be established after the reaction conditions were optimized. On the other hand, small and stable metal nanoparticles will be prepared to react with ozone directly, and the RRS spectra of the nanoparticles-ozone system and nanocatalytic reaction would be studied. The new nanoreaction-based RRS methods for atmospheric ozone would be proposed and used to detect real samples. Reaction kinetics and reaction mechanism of the above determination reactions will be studied by some kinds of experimental methods such as RRS spectra, UV-Vis spectra and TEM.

英文关键词： resonance Rayleigh scattering spectra；nanoparticles；O3；determination；pollutants