Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2021.105622 |
Particles liquid water and acidity determine formation of secondary inorganic ions in Urumqi, NW China | |
Huibin Liu, Dilinuer Talifu, Xiang Ding, Xinming Wang, ... Yuanyu Zhang | |
2021-04-08 | |
发表期刊 | Atmospheric Research |
出版年 | 2021 |
英文摘要 | Secondary atmospheric pollutants are an important component of the particles found in Urumqi city, China, Further, secondary inorganic aerosols, in particular, increase significantly during the winter heating period. In this study, samples collected from October 2017 to August 2018 from Urumqi were analyzed. Results showed that the average concentration of water-soluble inorganic ions (WSIs) in the heating period (86.9 ± 31.1 μg·m−3) was significantly higher than that in the non-heating period (14.1 ± 8.67 μg·m−3). SNA (SO42−, NO3−, NH4+) accounted for 90.7% of the total WSIs (TWSIs) in the heating period. Simulations revealed that the in situ pH (3.1) was higher in the heating period than that in non-heating period (0.66) when they were calculated by the aerosol thermodynamic model. The particles were found to be acidity during the entire period. The liquid water content of the particulates (LWC) was found to higher in the heating period (55.5 ± 51.8 μg·m−3) than the non-heating period (21.3 ± 40.3 μg·m−3). The average nitrogen oxidation rate (NOR) and sulfur oxidation rate (SOR) were 0.16 and 0.36, respectively, indicating a significant secondary formation of nitrate and sulfate in the atmosphere of Urumqi. Further analysis indicated that sulfate was significantly affected by the LWC and acidity of the particulates; nitrate was produced under ammonia-rich conditions in Urumqi, and the LWC facilitated the production of nitrate. This study provides information about the formation of secondary sulfate and nitrate aerosols during different periods in suburban Urumqi. |
领域 | 地球科学 |
URL | 查看原文 |
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/321947 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Huibin Liu, Dilinuer Talifu, Xiang Ding, Xinming Wang, ... Yuanyu Zhang. Particles liquid water and acidity determine formation of secondary inorganic ions in Urumqi, NW China[J]. Atmospheric Research,2021. |
APA | Huibin Liu, Dilinuer Talifu, Xiang Ding, Xinming Wang, ... Yuanyu Zhang.(2021).Particles liquid water and acidity determine formation of secondary inorganic ions in Urumqi, NW China.Atmospheric Research. |
MLA | Huibin Liu, Dilinuer Talifu, Xiang Ding, Xinming Wang, ... Yuanyu Zhang."Particles liquid water and acidity determine formation of secondary inorganic ions in Urumqi, NW China".Atmospheric Research (2021). |
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