大气复合污染条件下新粒子生成和增长机制及其环境影响
发布时间：2019-05-27 15:18
【摘要】：新粒子生成与增长是一个从分子到纳米颗粒物的微观尺度演变过程,对区域到全球尺度空气质量和气候造成显著影响.总结了国内外对新粒子生成与增长物理化学机制的研究进展和局限性.提出以揭示新粒子生成、增长及其产生环境效应的机制为核心目标,利用外场观测、烟雾箱模拟和模式模拟等多种手段,开发和应用先进的研究技术,辨识参与并促使快速成核的关键前体物种,弄清驱动新粒子初始和后续增长的化学和物理机制,以揭示大气复合污染条件下快速成核和持续增长的条件与机制并评价新粒子对大气环境的影响.在全面理解大气复合污染条件下成核和增长机制及其环境效应的基础上提高对区域霾形成机制的认识,也推进国际相关领域对污染大气环境新粒子生成与增长机制普遍性和差异性的研究.
[Abstract]:The formation and growth of new particles is a microscopic evolution process from molecules to nanoparticles, which has a significant impact on air quality and climate from regional to global scales. The research progress and limitations of physicochemical mechanism of new particle formation and growth at home and abroad are summarized. In order to reveal the mechanism of new particle formation, growth and environmental effects as the core goal, advanced research techniques are developed and applied by means of external field observation, smoke box simulation and model simulation. Identify key precursor species involved in and facilitate rapid nucleation and identify the chemical and physical mechanisms that drive the initial and subsequent growth of new particles, In order to reveal the conditions and mechanisms of rapid nucleation and sustained growth under the condition of air compound pollution, and to evaluate the influence of new particles on the atmospheric environment. On the basis of a comprehensive understanding of the nucleation and growth mechanism and its environmental effects under the condition of air complex pollution, to raise the understanding of the regional haze formation mechanism, It also promotes the study of the universality and difference of the mechanism of new particle formation and growth in polluted atmospheric environment in relevant fields of the world.
【作者单位】： 环境模拟与污染控制国家重点联合实验室北京大学环境科学与工程学院;
【基金】：国家自然科学基金(Nos.91544214;21190052,41121004) 国家重点基础研究发展计划(No.2013CB228503) 中国科学院战略性先导科技专项(No.XDB05010500)资助~~
【分类号】：X513
本文编号：2486254
[Abstract]:The formation and growth of new particles is a microscopic evolution process from molecules to nanoparticles, which has a significant impact on air quality and climate from regional to global scales. The research progress and limitations of physicochemical mechanism of new particle formation and growth at home and abroad are summarized. In order to reveal the mechanism of new particle formation, growth and environmental effects as the core goal, advanced research techniques are developed and applied by means of external field observation, smoke box simulation and model simulation. Identify key precursor species involved in and facilitate rapid nucleation and identify the chemical and physical mechanisms that drive the initial and subsequent growth of new particles, In order to reveal the conditions and mechanisms of rapid nucleation and sustained growth under the condition of air compound pollution, and to evaluate the influence of new particles on the atmospheric environment. On the basis of a comprehensive understanding of the nucleation and growth mechanism and its environmental effects under the condition of air complex pollution, to raise the understanding of the regional haze formation mechanism, It also promotes the study of the universality and difference of the mechanism of new particle formation and growth in polluted atmospheric environment in relevant fields of the world.
【作者单位】： 环境模拟与污染控制国家重点联合实验室北京大学环境科学与工程学院;
【基金】：国家自然科学基金(Nos.91544214;21190052,41121004) 国家重点基础研究发展计划(No.2013CB228503) 中国科学院战略性先导科技专项(No.XDB05010500)资助~~
【分类号】：X513
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