Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073210 |
Fine particle pH during severe haze episodes in northern China | |
Liu, Mingxu; Song, Yu; Zhou, Tian; Xu, Zhenying; Yan, Caiqing; Zheng, Mei; Wu, Zhijun; Hu, Min; Wu, Yusheng; Zhu, Tong | |
2017-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Aerosol acidity plays an important role in atmospheric chemistry. China emits large amounts of SO2, NOx, and NH3 into the atmosphere, but aerosol acidity is poorly characterized. In this study, simultaneous 1 h measurements of particulate and gaseous compositions along with the ISORROPIA-II thermodynamic equilibrium model were used to study aerosol acidity during severe haze episodes in northern China. The summed concentration of sulfate, nitrate, and ammonium was 135 +/- 51 mu g/m(3) with a maximum of 250 mu g/m(3), and the gas-phase NH3 mixing ratio was 22 +/- 9 ppb. Fine particles were moderately acidic, with a pH range of 3.0-4.9 and an average of 4.2, which was higher than those in the United States and Europe. Excess NH3 and high aerosol water content are responsible for the relatively lower aerosol acidity. These results suggest that the new pathways for sulfate production in China proposed by recent studies should be revisited. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131900098 |
WOS关键词 | THERMODYNAMIC-EQUILIBRIUM MODEL ; RELATIVE-HUMIDITY ; AEROSOL ACIDITY ; AIR-POLLUTION ; UNITED-STATES ; WATER ; SULFATE ; AMMONIA ; PM2.5 ; MULTICOMPONENT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27201 |
专题 | 气候变化 |
作者单位 | Peking Univ, State Key Joint Lab Environm Simulat & Pollut Con, Dept Environm Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Mingxu,Song, Yu,Zhou, Tian,et al. Fine particle pH during severe haze episodes in northern China[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10). |
APA | Liu, Mingxu.,Song, Yu.,Zhou, Tian.,Xu, Zhenying.,Yan, Caiqing.,...&Zhu, Tong.(2017).Fine particle pH during severe haze episodes in northern China.GEOPHYSICAL RESEARCH LETTERS,44(10). |
MLA | Liu, Mingxu,et al."Fine particle pH during severe haze episodes in northern China".GEOPHYSICAL RESEARCH LETTERS 44.10(2017). |
条目包含的文件 | 条目无相关文件。 |
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