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To investigate the particle size distribution and formation pathways of atmospheric secondary organic aerosols (SOA), size-resolved aerosol sampling was conducted in Chengdu. The results revealed a bimodal distribution dominated by fine particles, with mass concentration peaks observed at 0.56~1.0μm and 3.2~5.6μm. Organic matter was the most abundant component in both fine and coarse modes. SO42-, NH4+, and K+ were mainly present in the fine mode, while NO3-, Ca2+, and Mg2+ were enriched in the coarse mode, indicating a strong influence of soil dust on coarse particles. Source apportionment showed that SOA accounted for 67% of the total organic matter. Correlation analysis revealed that fine-mode SOA was significantly associated with SO42- and NH4+, while coarse-mode SOA was positively correlated with Ca2+, Mg2+, and water-soluble Fe, suggesting that the formation of coarse mode SOA was related to the heterogeneous reaction of soil dust containing transition metal element Fe. The differing correlations of pH and aerosol liquid water content with SOA across particle sizes highlight their complex and combined roles in SOA formation.

, authors=Meng-xue TANG, Xiao-feng HUANG*, Dong-yi HE, Ning FENG, Ling-yan HE, authorsList=Meng-xue TANG, Xiao-feng HUANG, Dong-yi HE, Ning FENG, Ling-yan HE, authorCompany=null, correspAuthors=Xiao-feng HUANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314922120321262458, articleId=1314922119369155447, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=基于多级粒径段观测的大气二次有机气溶胶形成途径研究, columnId=1234106388364981004, journalTitle=中国环境科学, columnName=大气污染与控制, runingTitle=null, highlight=null, articleAbstract=

为了探究大气二次有机气溶胶(SOA)的粒径分布及形成途径,在成都开展了大气分粒径颗粒物采样.结果发现,大气颗粒物粒径呈双峰分布,以细颗粒为主,峰值位于0.56~1.0μm和3.2~5.6μm.有机物在细模态和粗模态中均占比最高,SO42-、NH4+、K+等主要分布于细模态,NO3-、Ca2+和Mg2+则集中于粗模态,表明粗颗粒物受土壤尘影响显著.来源解析显示,SOA为总有机物的主要贡献组分(67%).相关性分析发现,细模态SOA与SO42-、NH4+显著相关,粗模态SOA则与Ca2+、Mg2+及水溶性Fe呈正相关,表明粗模态SOA的形成与包含了过渡金属元素铁的土壤尘的非均相反应有关.不同粒径中pH值、气溶胶含水量与SOA相关性表现出差异,反映出其在SOA形成中的复杂复合作用.

, authors=唐梦雪, 黄晓锋*, 何冬一, 冯凝, 何凌燕, authorsList=唐梦雪, 黄晓锋, 何冬一, 冯凝, 何凌燕, authorCompany=null, correspAuthors=黄晓锋, authorNote=

唐梦雪(1996-),女,安徽池州人,北京大学深圳研究生院博士研究生,主要从事大气二次污染成因研究.发表论文20余篇..

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* 责任作者,教授,
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唐梦雪(1996-),女,安徽池州人,北京大学深圳研究生院博士研究生,主要从事大气二次污染成因研究.发表论文20余篇..

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唐梦雪(1996-),女,安徽池州人,北京大学深圳研究生院博士研究生,主要从事大气二次污染成因研究.发表论文20余篇..

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基于多级粒径段观测的大气二次有机气溶胶形成途径研究
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唐梦雪 , 黄晓锋 * , 何冬一 , 冯凝 , 何凌燕
中国环境科学 | 大气污染与控制 2026,46(2): 612-617
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中国环境科学 |大气污染与控制 2026 , 46 (2) : 612 -617
基于多级粒径段观测的大气二次有机气溶胶形成途径研究
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唐梦雪(1996-),女,安徽池州人,北京大学深圳研究生院博士研究生,主要从事大气二次污染成因研究.发表论文20余篇..

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唐梦雪(1996-),女,安徽池州人,北京大学深圳研究生院博士研究生,主要从事大气二次污染成因研究.发表论文20余篇..

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唐梦雪 , 黄晓锋* , 何冬一, 冯凝, 何凌燕
作者信息
  • 北京大学深圳研究生院,环境与能源学院,城市人居环境科学与技术实验室,广东 深圳 518055
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* 责任作者,教授,
作者简介:

唐梦雪(1996-),女,安徽池州人,北京大学深圳研究生院博士研究生,主要从事大气二次污染成因研究.发表论文20余篇..

Research on the atmospheric secondary organic aerosol formation pathways based on multi-stage size-resolved observations
Meng-xue TANG , Xiao-feng HUANG* , Dong-yi HE, Ning FENG, Ling-yan HE
Affiliations
  • Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China
出版时间: 2026-02-20
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为了探究大气二次有机气溶胶(SOA)的粒径分布及形成途径,在成都开展了大气分粒径颗粒物采样.结果发现,大气颗粒物粒径呈双峰分布,以细颗粒为主,峰值位于0.56~1.0μm和3.2~5.6μm.有机物在细模态和粗模态中均占比最高,SO42-、NH4+、K+等主要分布于细模态,NO3-、Ca2+和Mg2+则集中于粗模态,表明粗颗粒物受土壤尘影响显著.来源解析显示,SOA为总有机物的主要贡献组分(67%).相关性分析发现,细模态SOA与SO42-、NH4+显著相关,粗模态SOA则与Ca2+、Mg2+及水溶性Fe呈正相关,表明粗模态SOA的形成与包含了过渡金属元素铁的土壤尘的非均相反应有关.不同粒径中pH值、气溶胶含水量与SOA相关性表现出差异,反映出其在SOA形成中的复杂复合作用.

二次气溶胶  /  细颗粒物  /  粗颗粒物  /  土壤尘  /  水溶性金属元素

To investigate the particle size distribution and formation pathways of atmospheric secondary organic aerosols (SOA), size-resolved aerosol sampling was conducted in Chengdu. The results revealed a bimodal distribution dominated by fine particles, with mass concentration peaks observed at 0.56~1.0μm and 3.2~5.6μm. Organic matter was the most abundant component in both fine and coarse modes. SO42-, NH4+, and K+ were mainly present in the fine mode, while NO3-, Ca2+, and Mg2+ were enriched in the coarse mode, indicating a strong influence of soil dust on coarse particles. Source apportionment showed that SOA accounted for 67% of the total organic matter. Correlation analysis revealed that fine-mode SOA was significantly associated with SO42- and NH4+, while coarse-mode SOA was positively correlated with Ca2+, Mg2+, and water-soluble Fe, suggesting that the formation of coarse mode SOA was related to the heterogeneous reaction of soil dust containing transition metal element Fe. The differing correlations of pH and aerosol liquid water content with SOA across particle sizes highlight their complex and combined roles in SOA formation.

secondary organic aerosol(SOA)  /  fine particles  /  coarse particles  /  soil dust  /  water-soluble metal elements
唐梦雪, 黄晓锋, 何冬一, 冯凝, 何凌燕. 基于多级粒径段观测的大气二次有机气溶胶形成途径研究. 中国环境科学, 2026 , 46 (2) : 612 -617 .
Meng-xue TANG, Xiao-feng HUANG, Dong-yi HE, Ning FENG, Ling-yan HE. Research on the atmospheric secondary organic aerosol formation pathways based on multi-stage size-resolved observations[J]. China Environmental Science, 2026 , 46 (2) : 612 -617 .
  • 国家重点研发计划项目(2022YFC3701002)
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2026年第46卷第2期
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  • 接收时间:2025-07-05
  • 首发时间:2026-10-08
  • 出版时间:2026-02-20
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  • 收稿日期:2025-07-05
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国家重点研发计划项目(2022YFC3701002)
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    北京大学深圳研究生院,环境与能源学院,城市人居环境科学与技术实验室,广东 深圳 518055

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2种不同金属材料的力学参数
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属数
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genus
种数
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species
占总种数比例
Percentage of
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属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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