高分辨质谱技术在大气棕色碳研究中的应用  

Applications of High Resolution Mass Spectrometry in Studies of Brown Carbon

作　　者：姜鸿兴 李军[1] 唐娇 莫扬之 张干[1] JIANG Hong-Xing;LI Jun;TANG Jiao;MO Yang-Zhi;ZHANG Gan(State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院广州地球化学研究所,有机地球化学国家重点实验室,广州510640 [2]中国科学院大学,北京100049

出　　处：《分析化学》2018年第10期1528-1538,共11页Chinese Journal of Analytical Chemistry

基　　金：本文系国家自然科学基金项目(No.41773120)和广州市科技局项目(No.201504010002)资助。

摘　　要：大气棕色碳是目前碳质气溶胶领域研究的热点之一,由于其在近紫外-可见光区域有明显的吸光性,因而对区域辐射强迫和气候效应有重要影响。棕色碳既可来源于一次排放,主要为生物质和燃煤不完全燃烧;也可由挥发性有机物(VOCs)经大气光化学反应等二次生成。棕色碳分子组成十分复杂,而高分辨质谱技术以其超高分辨率和质量精确度,为在分子水平上表征复杂有机组分提供了有效手段。本文介绍了高分辨质谱技术结合传统分析手段在大气棕色碳研究中的应用现状,包括基于棕色碳分离的高分辨质谱联用技术的发展和基于高分辨质谱数据的棕色碳成分分析、来源示踪以及形成机理等,讨论了目前棕色碳研究现状以及存在的问题,展望了高分辨质谱技术在棕色碳研究中的应用前景。Brown carbon is one of the hotspots in the field of atmospheric carbonaceous aerosol research.It has significant influence on regional radiative forcing and climatic effects due to its apparent absorbance in the near ultraviolet-visible region.Brown carbon mainly originates from biomass or coal incomplete combustion,and it also comes from some secondary sources,such as a series of atmospheric photochemical reactions from volatile organic compounds(VOCs).Though the composition of the brown carbon is very complex,high resolution mass spectrometry technology provides effective methods for revealing the characteristic of organic components at the molecular level with its ultra-high mass resolution and precision.This paper introduced the application of high resolution mass spectrometry combined with traditional analytical methods in the study of brown carbon:the development of high resolution mass spectrometry for brown carbon separation was reviewed,as well as the composition analysis,source apportionment and formation mechanism of brown carbon based on high resolution data.In addition,the present situation,existing issues and prospects about the application of high resolution mass spectrometry on brown carbon were also discussed.

关 键 词：棕色碳 高分辨质谱 吸光 组分 生物质燃烧 二次有机气溶胶 评述 

分 类 号：O657.63[理学—分析化学] X513[理学—化学]