Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.11.014 |
Spatial and temporal characteristics of PM2.5 acidity during autumn in marine and coastal area of Bohai Sea, China, based on two-site contrast | |
Zhou, Ming1; Zhang, Yufen1; Han, Yan1; Wu, Jianhui1; Du, Xiang1; Xu, Hong1; Feng, Yinchang1; Han, Suqin2 | |
2018-04-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 202页码:196-204 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | In-situ pH of atmospheric particulate, defined as the pH value of aqueous phase in ambient aerosol, has been reported to have significant influence on the formation progress of secondary aerosol, especially through the heterogeneous pathway. In this study, PM2.5 samples were collected in the marine and costal area of Bohai Sea from September 8th to October 8th in 2013, with daytime and nighttime separated. Eight water-soluble ions including SO42-, NO3-, Cl-, NH4-, K+, Ca2+, Na+ and Mg2+ were analyzed by ion chromatography. The in situ pH of PM2.5 was estimated using Aerosol Inorganics Model II, with meteorological parameters (temperature and relative humidity) and basic chemical composition data (concentrations of water-soluble ions) serving as input. Five indicators were conjunctively applied to describe the spatial and temporal characteristics of PM2.5 acidity over Bohai Sea during autumn. As a result, strong acidity was found in both marine and coastal area. Marine area had a stronger acidity under a more NH4+-deficiency and humid condition. And the difference of PM2.5 acidity between daytime and nighttime was more obvious in coastal area than that in marine area, with stronger acidity observed during the daytime. Local SO2 emission was identified as an important factor influencing the diurnal variation of aerosol acidity. Meanwhile, sulfurous species were identified as a mixture of NH4HSO4 and H2SO4 in marine area while a mixture of NH4HSO4 and (NH4)(2)SO4 in the coastal area. Analysis in the impact of aerosol acidity on nitrate formation has indicated that heterogeneous pathways were important in nitrate formation in coastal area of Bohai Sea as well as the homogeneous pathways. Capsule abstract: PM2.5 was highly acidic around Bohai Sea, and the acidity of PM2.5 was stronger in marine area than coastal area during autumn. |
英文关键词 | Acidity PM2.5 Spatial and temporal variation Marine Coast Nitrate formation |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426226500020 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; CHEMICAL-COMPOSITION ; SOURCE APPORTIONMENT ; ATMOSPHERIC AEROSOL ; SULFATE AEROSOLS ; AMBIENT PM2.5 ; QUANTIFICATION ; HYDROLYSIS ; AMMONIUM ; EXCHANGE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/38292 |
专题 | 地球科学 |
作者单位 | 1.Nankai Univ, Coll Environm Sci & Engn, State Environm Protect Key Lab Urban Ambient Air, 94 Weijin Rd, Tianjin 300071, Peoples R China; 2.Tianjin Inst Meteorol Sci, Tianjin 300074, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Ming,Zhang, Yufen,Han, Yan,et al. Spatial and temporal characteristics of PM2.5 acidity during autumn in marine and coastal area of Bohai Sea, China, based on two-site contrast[J]. ATMOSPHERIC RESEARCH,2018,202:196-204. |
APA | Zhou, Ming.,Zhang, Yufen.,Han, Yan.,Wu, Jianhui.,Du, Xiang.,...&Han, Suqin.(2018).Spatial and temporal characteristics of PM2.5 acidity during autumn in marine and coastal area of Bohai Sea, China, based on two-site contrast.ATMOSPHERIC RESEARCH,202,196-204. |
MLA | Zhou, Ming,et al."Spatial and temporal characteristics of PM2.5 acidity during autumn in marine and coastal area of Bohai Sea, China, based on two-site contrast".ATMOSPHERIC RESEARCH 202(2018):196-204. |
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