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棕碳气溶胶的生消机制研究进展

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关东杰, 沈振兴, 陈庆彩. 棕碳气溶胶的生消机制研究进展[J]. 环境化学, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
引用本文: 关东杰, 沈振兴, 陈庆彩. 棕碳气溶胶的生消机制研究进展[J]. 环境化学, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
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GUAN Dongjie, SHEN Zhenxing, CHEN Qingcai. Formation and elimination of brown carbon aerosol: A review[J]. Environmental Chemistry, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
Citation: GUAN Dongjie, SHEN Zhenxing, CHEN Qingcai. Formation and elimination of brown carbon aerosol: A review[J]. Environmental Chemistry, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
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棕碳气溶胶的生消机制研究进展

  • 1. 陕西科技大学环境科学与工程学院, 西安, 710021;

  • 2. 西安交通大学环境科学与工程学院, 西安, 710049

    • 通讯作者: 陈庆彩, E-mail: chenqingcai@sust.edu.cn.
  • 基金项目:

    国家自然科学基金（41877354，41703102）和陕西省自然科学基金（2018JM4011）资助.

Formation and elimination of brown carbon aerosol: A review

  • 1. School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China;

  • 2. Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China

    • Corresponding author: CHEN Qingcai, chenqingcai@sust.edu.cn.
  • Fund Project: Supported by the National Natural Science Foundation of China(41877354,41703102)and Natural Science Foundation of Shaanxi Province(2018JM4011).

  • 摘要: 在大气气溶胶中，黑碳（BC）是对光辐射有强烈吸收的物质.但近年的研究发现一部分有机碳（OC）在可见光区域也有光吸收，并且吸收强度随波长的减小而骤增，宏观呈现棕黄色，这类有机碳被定义为棕色碳—BrC（brown carbon）.鉴于其特殊的吸光特性和光化学反应性，认为它可能对全球气候和大气环境质量具有潜在影响，因此近年来棕碳成为了环境领域一大研究热点.基于过去近三十年的研究，特别是近十年间，棕碳的光学特性、化学组成以及来源已有基本认知，但同时也存在基础研究薄弱、不全面的问题.文章特别指出的是相比于一次排放，目前对棕碳二次生成过程所涉及的前体物、反应机制尚未形成完整和确切的体系，其老化消去过程也亟待明晰.本文总结了目前主要的二次棕碳生成和消去的反应类型和机制，旨在指出棕碳二次生成和消去的最新进展以及存在的主要问题，为将来的研究方向提供借鉴和依据.
    Abstract: Black carbon (BC) is the main light-absorbing substance in the atmospheric aerosols. It is found that some organic carbon (OC) can be light-absorbing in the UV-Visible region, and the absorption intensity increases sharply with decreasing wavelength in the recent studies. This type of brownish yellow organic carbon is defined as BrC (brown carbon). Due to its special light absorption properties and photochemical reactivity, it is believed to have potential impact on global climate and atmospheric environmental quality. Based on the past three decades of research, especially in the past decade, the optical properties, chemical composition and source of brown carbon have been basically recognized, but at the same time there are problems of weak and incomplete basic research. This paper pointed out that secondary generation was another important source of brown carbon, besides primary emissions. However, the precursors and reaction mechanisms involved in the secondary generation of brown carbon had not yet been formed, and its aging elimination process also urgently needed. This paper summarized the current types and mechanisms of secondary brown carbon generation and elimination, which aimed to point out the latest developments and the existing problems of it. It also could provide reference and basis directions for future research.
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  • 收稿日期:  2019-07-09
关东杰, 沈振兴, 陈庆彩. 棕碳气溶胶的生消机制研究进展[J]. 环境化学, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
引用本文: 关东杰, 沈振兴, 陈庆彩. 棕碳气溶胶的生消机制研究进展[J]. 环境化学, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
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GUAN Dongjie, SHEN Zhenxing, CHEN Qingcai. Formation and elimination of brown carbon aerosol: A review[J]. Environmental Chemistry, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
Citation: GUAN Dongjie, SHEN Zhenxing, CHEN Qingcai. Formation and elimination of brown carbon aerosol: A review[J]. Environmental Chemistry, 2020, (10): 2812-2822. doi: 10.7524/j.issn.0254-6108.2019070902
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棕碳气溶胶的生消机制研究进展

    通讯作者: 陈庆彩, E-mail: chenqingcai@sust.edu.cn.
  • 1. 陕西科技大学环境科学与工程学院, 西安, 710021;
  • 2. 西安交通大学环境科学与工程学院, 西安, 710049
  • 收稿日期:  2019-07-09
基金项目:

国家自然科学基金（41877354，41703102）和陕西省自然科学基金（2018JM4011）资助.

摘要: 在大气气溶胶中，黑碳（BC）是对光辐射有强烈吸收的物质.但近年的研究发现一部分有机碳（OC）在可见光区域也有光吸收，并且吸收强度随波长的减小而骤增，宏观呈现棕黄色，这类有机碳被定义为棕色碳—BrC（brown carbon）.鉴于其特殊的吸光特性和光化学反应性，认为它可能对全球气候和大气环境质量具有潜在影响，因此近年来棕碳成为了环境领域一大研究热点.基于过去近三十年的研究，特别是近十年间，棕碳的光学特性、化学组成以及来源已有基本认知，但同时也存在基础研究薄弱、不全面的问题.文章特别指出的是相比于一次排放，目前对棕碳二次生成过程所涉及的前体物、反应机制尚未形成完整和确切的体系，其老化消去过程也亟待明晰.本文总结了目前主要的二次棕碳生成和消去的反应类型和机制，旨在指出棕碳二次生成和消去的最新进展以及存在的主要问题，为将来的研究方向提供借鉴和依据.

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