Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-11071-2019 |
High time-resolved measurement of stable carbon isotope composition in water-soluble organic aerosols: method optimization and a case study during winter haze in eastern China | |
Zhang, Wenqi1,2,3; Zhang, Yan-Lin1,2,3; Cao, Fang1,2,3; Xiang, Yankun1,2,3; Zhang, Yuanyuan1,2,3; Bao, Mengying1,2,3; Liu, Xiaoyan1,2,3; Lin, Yu-Chi1,2,3 | |
2019-09-02 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:17页码:11071-11087 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Water-soluble organic carbon (WSOC) is a significant fraction of organic carbon (OC) in atmospheric aerosols. WSOC is of great interest due to its significant effects on atmospheric chemistry, the Earth's climate and human health. The stable carbon isotope (delta C-13) can be used to track the potential sources and investigate atmospheric processes of organic aerosols. However, the previous methods measuring the delta C-13 values of WSOC in ambient aerosols require a large amount of carbon content, are time-consuming and require labor-intensive preprocessing. In this study, a method of simultaneously measuring the mass concentration and the delta C-13 values of WSOC from aerosol samples is established by coupling the GasBench II preparation device with isotopic ratio mass spectrometry. The precision and accuracy of isotope determination is better than 0.17 %0 and 0.5 %0, respectively, for samples containing WSOC amounts larger than 5 mu g. This method is then applied for the aerosol samples collected every 3 h during a severe wintertime haze period in Nanjing, eastern China. The WSOC values vary between 3 and 32 mu g m(-3), whereas delta C-13-WSOC ranges from -26.24 %0 to -23.35 %0. Three different episodes (Episode 1, Episode 2 and Episode 3) are identified in the sampling period, showing a different tendency of delta C-13-WSOC with the accumulation process of WSOC aerosols. The increases in both the WSOC mass concentrations and the delta C-13-WSOC values in Episode 1 indicate that WSOC is subject to a substantial photochemical aging during the air mass transport. In Episode 2, the decline of the delta C-13 wsoc is accompanied by the increase in the WSOC mass concentrations, which is associated with regional-transported biomass burning emissions. In Episode 3, heavier isotope (C-13) is exclusively enriched in total carbon (TC) in comparison to WSOC aerosols. This suggests that the non-WSOC fraction in total carbon may contain C-13-enriched components such as dust carbonate, which is supported by the enhanced Ca2+ concentrations and air mass trajectory analysis. The present study provides a novel method to determine the stable carbon isotope composition of WSOC, and it offers a great potential to better understand the source emission, the atmospheric aging and the secondary production of water-soluble organic aerosols. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000484143100002 |
WOS关键词 | GAS-PHASE REACTIONS ; SOURCE APPORTIONMENT ; SEASONAL-VARIATIONS ; DICARBOXYLIC-ACIDS ; ATMOSPHERIC AEROSOLS ; MARINE AEROSOLS ; OFFLINE-AMS ; NITROGEN ; C-13 ; URBAN |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186917 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Int Joint Lab Climate & Environm Change ILCEC, Nanjing 210044, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Minist Educ KLME, CIC FEMD, Nanjing 210044, Jiangsu, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Jiangsu Prov Key Lab Agr Meteorol, Coll Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Wenqi,Zhang, Yan-Lin,Cao, Fang,et al. High time-resolved measurement of stable carbon isotope composition in water-soluble organic aerosols: method optimization and a case study during winter haze in eastern China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(17):11071-11087. |
APA | Zhang, Wenqi.,Zhang, Yan-Lin.,Cao, Fang.,Xiang, Yankun.,Zhang, Yuanyuan.,...&Lin, Yu-Chi.(2019).High time-resolved measurement of stable carbon isotope composition in water-soluble organic aerosols: method optimization and a case study during winter haze in eastern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(17),11071-11087. |
MLA | Zhang, Wenqi,et al."High time-resolved measurement of stable carbon isotope composition in water-soluble organic aerosols: method optimization and a case study during winter haze in eastern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.17(2019):11071-11087. |
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