| 长三角淳安地区二次颗粒物污染形成机制 |
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| 引用本文： | 黄丹丹,周敏,余传冠,朱书慧,王裕成,乔利平,楼晟荣,陶士康,杨强,李莉.长三角淳安地区二次颗粒物污染形成机制[J].环境科学,2018,39(12):5308-5314. |
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| 作者姓名： | 黄丹丹 周敏 余传冠 朱书慧 王裕成 乔利平 楼晟荣 陶士康 杨强 李莉 |
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| 作者单位： | 上海市环境科学研究院;国家环境保护城市大气复合污染成因与防治重点实验室;淳安县环境保护监测站;杭州市环境保护科学研究院;闽南师范大学化学与环境学...;承德市环境保护局;;成都信息工程大学大气科学...;内蒙古自治区气象灾害监测...;岳阳市气象局;;(1.海峡气象开放实验室;上海市环境科学研究院;国...;南开大学环境科学与工程学...;浙江省气象科学研究所;宁...;西南大学资源环境学院三峡... |
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| 基金项目： | 国家科技支撑计划项目（2014BAC22B03）；浙江省科研课题项目（CACGZF[2016]24） |
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| 摘 要： | 二次组分是长三角区域PM_(2.5)颗粒物的主要组成部分,研究二次细颗粒物污染特征以及形成机制对污染控制至关重要.本文揭示了长三角背景地区颗粒物的有机与无机组分的构成,实现了对二次有机气溶胶(SOA)总量的核算;并进一步结合气溶胶热力学模型,模拟颗粒物的理化性质,深入探讨颗粒相的水含量与酸碱度对二次污染物形成的影响.结果表明,长三角背景区域细颗粒的年平均浓度为33μg·m~(-3),主要成分为硫酸盐、硝酸盐、铵盐和有机物,其平均贡献分别为19%、15%、12%和19%.颗粒相中的硝酸盐主要为局地生成,其质量浓度主要受到温度与颗粒相铵盐浓度的影响;硫酸盐的生成受到区域传输与局地生成的耦合作用的影响.气溶胶热力学模型模拟的结果显示,长三角背景地区颗粒物总体呈现强酸性,其酸度受季节影响不大,但显著受到了颗粒相水含量的影响;颗粒相水含量对春季SOA生成的促进作用较夏季更为显著;夏季SOA在PM_(2.5)中质量浓度占比高达40%,其形成主要受到大气氧化性的影响.
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| 关 键 词： | 细颗粒物(PM2.5) 颗粒相水含量 颗粒相酸碱度 二次无机气溶胶 二次有机气溶胶(SOA) |
| 收稿时间： | 2018/2/12 0:00:00 |
| 修稿时间： | 2018/5/21 0:00:00 |
Physiochemical Properties of the Aerosol Particles and Their Impacts on Secondary Aerosol Formation at the Background Site of the Yangtze River Delta |
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| HUANG Dan-dan,ZHOU Min,YU Chuan-guan,ZHU Shu-hui,WANG Yu-cheng,QIAO Li-ping,LOU Sheng-rong,TAO Shi-kang,YANG Qiang and LI Li.Physiochemical Properties of the Aerosol Particles and Their Impacts on Secondary Aerosol Formation at the Background Site of the Yangtze River Delta[J].Chinese Journal of Environmental Science,2018,39(12):5308-5314. |
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| Authors: | HUANG Dan-dan ZHOU Min YU Chuan-guan ZHU Shu-hui WANG Yu-cheng QIAO Li-ping LOU Sheng-rong TAO Shi-kang YANG Qiang and LI Li |
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| Institution: | Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China,Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China,Chun''an Environmental Monitoring Station, Chun''an 311700, China,Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China,Chun''an Environmental Monitoring Station, Chun''an 311700, China,Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China,Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China,Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China,Hangzhou Institute of Environment Sciences, Hangzhou 310014, China and Shanghai Academy of Environmental Sciences, Shanghai 200233, China;State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Complex, Shanghai 200233, China |
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| Abstract: | |
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| Keywords: | PM2 5 liquid water content of the particle particle acidity secondary inorganic aerosol secondary organic aerosol (SOA) |
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