Observation of nitrous acid (HONO) in Beijing, China: Seasonal variation, nocturnal formation and daytime budget
文献类型：期刊论文
| 作者 | Wang, Zhangwei; Zhang, Meigen; Wang, Jiaqi; Zhang, Xiaoshan; Guo, Jia |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 587期号:0页码:350-359 |
| 关键词 | Nitrous Acid Observation Megacity Air Pollution Heterogeneous Conversion Daytime Source |
| 英文摘要 | Seasonal characteristics of atmospheric nitrous acid (HONO) were investigated with high time-resolution field measurements at an urban site of Beijing in four select months (representing four different seasons) from September 2015 to July 2016. The HONO concentrations displayed a pronounced seasonal profile with a maximum in autumn (227 +/- 1.82 ppb) and a minimum in winter (1.05 +/- 0.89 ppb). Significant diurnal cycles were also observed during the whole campaign. We found that the nighttime build-up of HONO was attributed to the heterogeneous conversion of NO2 on wet surface. The calculated NO2 to HONO conversion frequencies varied from 0.005h(-1) in spring to 0.010 h(-1) in summer, with an average value of 0.008 h(-1). The seasonality of these conversion frequencies was closely related to the RH levels in different seasons. During daytime, large additional HONO sources were calculated. The noontime additional source was the highest in autumn 3.82 ppb h(-1), followed by summer 3.05 ppb h(-1), spring 2.63 ppb h(-1) and winter 130 ppb h(-1). Correlation studies between the additional HONO source and related parameters demonstrated that the controlling processes responsible for HONO daytime formation varied in different seasons, and that the photo-enhanced formation on wet surface or the photolysis of adsorbed nitric acid and nitrate could be potential HONO sources in Beijing. (C) 2017 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39175]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Zhangwei,Zhang, Meigen,Wang, Jiaqi,et al. Observation of nitrous acid (HONO) in Beijing, China: Seasonal variation, nocturnal formation and daytime budget[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,587(0):350-359. |
| APA | Wang, Zhangwei,Zhang, Meigen,Wang, Jiaqi,Zhang, Xiaoshan,&Guo, Jia.(2017).Observation of nitrous acid (HONO) in Beijing, China: Seasonal variation, nocturnal formation and daytime budget.SCIENCE OF THE TOTAL ENVIRONMENT,587(0),350-359. |
| MLA | Wang, Zhangwei,et al."Observation of nitrous acid (HONO) in Beijing, China: Seasonal variation, nocturnal formation and daytime budget".SCIENCE OF THE TOTAL ENVIRONMENT 587.0(2017):350-359. |
入库方式： OAI收割
来源：生态环境研究中心
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