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无锡冬季和春季大气中细粒子化学组分及其特性分析

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杨起超, 曾立民, 唐静玥, 魏永杰, 王莉华, 董华斌, 许涛, 过伟, 东梅, 龚伟达. 无锡冬季和春季大气中细粒子化学组分及其特性分析[J]. 环境化学, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
引用本文: 杨起超, 曾立民, 唐静玥, 魏永杰, 王莉华, 董华斌, 许涛, 过伟, 东梅, 龚伟达. 无锡冬季和春季大气中细粒子化学组分及其特性分析[J]. 环境化学, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
shu
YANG Qichao, ZENG Limin, TANG Jingyue, WEI Yongjie, WANG Lihua, DONG Huabin, XU Tao, GUO Wei, DONG Mei, GONG Weida. Characteristic analysis of chemical species in atmospheric fine particles in Wuxi during winter & spring sampling campaigns[J]. Environmental Chemistry, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
Citation: YANG Qichao, ZENG Limin, TANG Jingyue, WEI Yongjie, WANG Lihua, DONG Huabin, XU Tao, GUO Wei, DONG Mei, GONG Weida. Characteristic analysis of chemical species in atmospheric fine particles in Wuxi during winter & spring sampling campaigns[J]. Environmental Chemistry, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
shu

无锡冬季和春季大气中细粒子化学组分及其特性分析

  • 1.

    北京大学环境科学与工程学院环境模拟与污染控制国家联合重点实验室, 北京, 100871;

  • 2.

    北京市环境保护监测中心, 北京, 100048;

  • 3.

    无锡市环境保护局, 无锡, 214025;

  • 4.

    江阴市环境监测站, 无锡, 214400

  • 基金项目:

    国家高技术研究发展计划（863）项目（2006AA06A301）、环境保护部大气细颗粒物化学成分在线监测设备研制与应用示范（2013YQ060569）、环境保护部环保公益性行业科研专项项目（201009002）资助.

Characteristic analysis of chemical species in atmospheric fine particles in Wuxi during winter & spring sampling campaigns

  • 1.

    State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China;

  • 2.

    Beijing Municipal Environmental Monitoring Center, Beijing, 100048, China;

  • 3.

    Wuxi Environmental Protection Agency, Wuxi, 214025, China;

  • 4.

    Jiangyin Environmental Monitoring Station, Wuxi, 214400, China

  • Fund Project:

  • 摘要: 本研究对无锡冬（2011年1月）春（2011年5月）两季PM2.5、PM10颗粒物浓度进行了传统的膜采样及离线检测分析，并运用大气气体/气溶胶水溶性离子在线收集及分析（GAC-IC）系统对PM2.5颗粒物中水溶性无机离子（WSⅡ）进行了在线检测，时间分辨率为30 min.无锡冬、春两季PM2.5的浓度分别为108.15±41.76 μg·m-3 和84.40±26.74 μg·m-3，其PM2.5/PM10比值分别为0.81±0.07和0.78±0.07，有较强的二次气溶胶生成过程.铵可用性指数（J冬季=101.2%±22.3%，J春季=79.5%±20.2%）分析表明冬季无锡大气颗粒物中铵（NH4+）相对比较富余，而春季则出现铵（NH4+）亏损现象，春季光化学反应更为活跃，硫氧化率（SOR）由冬季的0.15±0.05增至春季的0.35±0.13，硫酸盐（SO42-）浓度增加明显，导致铵（NH4+）相对不足.硫氧化率（SOR）没有明显的季节变化，冬、春两季均为0.15.细粒子中的WSⅡ与气态污染物、气象因子、硫氧化率（SOR）和氮氧化率（NOR）等的主成分分析表明无锡大气光化学反应与污染物的其他来源，例如工业源、交通移动源、生物质燃烧源等，有很好的协同作用，共同推高了大气中颗粒物的浓度.观测期间同时测得冬季PM2.5颗粒中有机碳（OC）与元素碳（EC）浓度之间有较好的相关性（R2=0.839），两者有一个共同的主导源，而春季来源则比较复杂，两者相关性较差；二次有机碳（SOC）的半定量分析表明春季大气中有机气溶胶的形成有较强的二次转化过程.
    Abstract: Daily PM2.5 and PM10 mass concentration were analyzed using traditional filter samplers located at three sampling sites in Wuxi during winter (2011) and spring (2011) sampling campaigns. Water soluble inorganic ions (WSⅡ) in PM2.5 were also continuously measured using gases and aerosol collector coupled with ion chromatography on-line detecting (GAC-IC) system with a time resolution of 30 mins. The average mass concentrations of PM2.5 during winter and spring observation periods were 108.15±41.76 μg·m-3 and 84.40±26.74 μg·m-3, and PM2.5/PM10 mass concentration ratio were 0.81±0.07 and 0.78±0.07, respectively,indicating a process of secondary aerosols transformation. Analysis of ammonium availability index (Jwinter=101.2%±22.3%,Jspring=79.5%±20.2%) suggests that the ambient air was ammonia-rich in winter. By contrast, Wuxi had an ammonia-deficient atmosphere in spring. Sulfur oxidation ratio (SOR) increased significantly from 0.15±0.05 in winter to 0.35±0.13 in spring. Comparatively, nitrogen oxidation ratio (NOR) was essentially unchanged with a value of 0.15, making it clear that the atmosphere of Wuxi was photochemically much more active in spring. Principal component analysis (PCA) of PM2.5 aerosol chemical components, meteorological factors, gaseous pollutants (SO2, CO, O3, NO, NO2), SOR and NOR at Caozhang site showed that photochemical reaction with other pollutants sources, such as industrial sources, vehicle exhaust, biomass domestic and open burning etc., had a positive synergisitc effect during sampling campaigns, pushing up the mass concentration of particulate matters in atmosphere in Wuxi, especially fine particles. Meanwhile, during sampling campaigns, the concentration of OC and EC had a positive correlation (R2=0.839) in winter,revealing a common source which dominated the emission of OC and EC. The spring showed different sources of OC and EC. Secondary organic carbon (SOC) was semi-quantitatively estimated, and it implied that the formation of secondary organic aerosol was mainly due to a secondary transformation.
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  • 收稿日期:  2013-09-09
杨起超, 曾立民, 唐静玥, 魏永杰, 王莉华, 董华斌, 许涛, 过伟, 东梅, 龚伟达. 无锡冬季和春季大气中细粒子化学组分及其特性分析[J]. 环境化学, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
引用本文: 杨起超, 曾立民, 唐静玥, 魏永杰, 王莉华, 董华斌, 许涛, 过伟, 东梅, 龚伟达. 无锡冬季和春季大气中细粒子化学组分及其特性分析[J]. 环境化学, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
shu
YANG Qichao, ZENG Limin, TANG Jingyue, WEI Yongjie, WANG Lihua, DONG Huabin, XU Tao, GUO Wei, DONG Mei, GONG Weida. Characteristic analysis of chemical species in atmospheric fine particles in Wuxi during winter & spring sampling campaigns[J]. Environmental Chemistry, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
Citation: YANG Qichao, ZENG Limin, TANG Jingyue, WEI Yongjie, WANG Lihua, DONG Huabin, XU Tao, GUO Wei, DONG Mei, GONG Weida. Characteristic analysis of chemical species in atmospheric fine particles in Wuxi during winter & spring sampling campaigns[J]. Environmental Chemistry, 2014, 33(9): 1501-1513. doi: 10.7524/j.issn.0254-6108.2014.09.002
shu

无锡冬季和春季大气中细粒子化学组分及其特性分析

  • 1.  北京大学环境科学与工程学院环境模拟与污染控制国家联合重点实验室, 北京, 100871;
  • 2.  北京市环境保护监测中心, 北京, 100048;
  • 3.  无锡市环境保护局, 无锡, 214025;
  • 4.  江阴市环境监测站, 无锡, 214400
  • 收稿日期:  2013-09-09
基金项目:

国家高技术研究发展计划（863）项目（2006AA06A301）、环境保护部大气细颗粒物化学成分在线监测设备研制与应用示范（2013YQ060569）、环境保护部环保公益性行业科研专项项目（201009002）资助.

摘要: 本研究对无锡冬（2011年1月）春（2011年5月）两季PM2.5、PM10颗粒物浓度进行了传统的膜采样及离线检测分析，并运用大气气体/气溶胶水溶性离子在线收集及分析（GAC-IC）系统对PM2.5颗粒物中水溶性无机离子（WSⅡ）进行了在线检测，时间分辨率为30 min.无锡冬、春两季PM2.5的浓度分别为108.15±41.76 μg·m-3 和84.40±26.74 μg·m-3，其PM2.5/PM10比值分别为0.81±0.07和0.78±0.07，有较强的二次气溶胶生成过程.铵可用性指数（J冬季=101.2%±22.3%，J春季=79.5%±20.2%）分析表明冬季无锡大气颗粒物中铵（NH4+）相对比较富余，而春季则出现铵（NH4+）亏损现象，春季光化学反应更为活跃，硫氧化率（SOR）由冬季的0.15±0.05增至春季的0.35±0.13，硫酸盐（SO42-）浓度增加明显，导致铵（NH4+）相对不足.硫氧化率（SOR）没有明显的季节变化，冬、春两季均为0.15.细粒子中的WSⅡ与气态污染物、气象因子、硫氧化率（SOR）和氮氧化率（NOR）等的主成分分析表明无锡大气光化学反应与污染物的其他来源，例如工业源、交通移动源、生物质燃烧源等，有很好的协同作用，共同推高了大气中颗粒物的浓度.观测期间同时测得冬季PM2.5颗粒中有机碳（OC）与元素碳（EC）浓度之间有较好的相关性（R2=0.839），两者有一个共同的主导源，而春季来源则比较复杂，两者相关性较差；二次有机碳（SOC）的半定量分析表明春季大气中有机气溶胶的形成有较强的二次转化过程.

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