大气颗粒物中水溶性有机物的理化性质和污染特征研究进展  

Advances in research on physical and chemical properties and pollution characteristics of water soluble organic matter in atmospheric particles

作　　者：乔保清 徐布一 史海霞[4] 陈阳[1] 王欢博[1,4] QIAO Bao-qing;XU Bu-yi;SHI Hai-xia;CHEN Yang;WANG Huan-bo(Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China;University of Chinese Academy of Sciences,Beijing 100049,China;Sichuan Police College,Luzhou 646000,China;Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]中国科学院重庆绿色智能技术研究院,重庆400714 [2]中国科学院大学,北京100049 [3]四川警察学院,四川泸州646000 [4]西南科技大学,四川绵阳621010

出　　处：《地球化学》2020年第3期229-240,共12页Geochimica

基　　金：国家社会科学基金(15CGL043)。

摘　　要：水溶性有机物(WSOM)是颗粒物的重要组成部分,来源广泛,组成复杂,对大气能见度、全球气候变化以及人体健康均有影响。本文主要综述了近5年国内外有关WSOM的研究成果,主要结论如下:(1)脂肪族化合物是WSOM的主要化学组分,而芳香族化合物含量相对较低;(2)WSOM相对于水溶性无机离子的占比增加时,气溶胶的吸湿增长因子相对较低;(3)不同来源的WSOM,其吸光性能差异较大,生物质燃烧源对WSOM的吸光贡献最大;(4)WSOM主要来自于生物质燃烧和光化学反应的二次生成,其秋、冬季浓度水平明显高于春、夏季,城区和郊区浓度水平均明显高于地区背景点。Water soluble organic matter(WSOM)is a major component of atmospheric particulate matter with complex compositions and diverse sources,which has significant impacts on visibility,global climate change,and human health.In this study,major results on WSOM from literatures in recent five years were reviewed,and the following conclusions were drawn:firstly,aliphatic compounds were dominant components in WSOM whereas the percentages of aromatic compounds in WSOM were low;secondly,the hygroscopic growth factors decreased when the contributions of WSOM to the total amounts of WSOM and water soluble inorganic ions increased;thirdly,the light-absorbing properties of WSOM varied largely depending on their origins;and the source of WSOM from biomass burning exhibited the highest contribution to the absorption of WSOM;finally,WSOM primarily originated from biomass burning and secondary formation;in addition,the concentrations of WSOM in autumn and winter were evidently higher than those in spring and summer,and their concentrations at urban and suburban sites were significantly higher than those at background sites.

关 键 词：颗粒物 水溶性有机物 理化性质 污染特征 

分 类 号：P593[天文地球—地球化学] X513[天文地球—地质学]