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| 论文编号: |
16 |
| 论文题目: |
Concentration and sources of atmospheric nitrous acid (HONO) at an urban site in Western China |
| 英文论文题目: |
Concentration and sources of atmospheric nitrous acid (HONO) at an urban site in Western China |
| 第一作者: |
Huang, RJ |
| 英文第一作者: |
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| 联系作者: |
Huang Rujin |
| 英文联系作者: |
Huang Rujin |
| 外单位作者单位: |
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| 发表年度: |
2017 |
| 卷: |
593 |
| 期: |
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| 页码: |
165-172 |
| 摘要: |
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| 英文摘要: |
Highly time-resolved measurements of nitrous acid (HONO) were carried out with a highly sensitive long path absorption photometer (LOPAP) at an urban site of Xi'an in Western China from 24 July to 6 August 2015 to investigate the atmospheric variations, sources, and formation pathways of HONO. The concentrations of HONO vary from 0.02 to 43 ppbv with an average of 1.12 ppbv for the entire measurement period. The variation trends of HONO and NO2 are very similar and positively correlated which, together with the similar diurnal profiles of HONO/NO2 ratio and HONO, suggest the importance of heterogeneous conversion of HONO from NO2. The nocturnal HONO level is governed by heterogeneous formation from NO2, followed by homogeneous formation of NO with OH and then by direct emissions. Further, it is found that the heterogeneous formation of HONO is largely affected by relative humidity and aerosol surface. Daytime HONO budget analysis indicates that an additional unknown source with HONO production rate of 0.75 ppbv h(-1) is required to explain the observed HONO concen-HONO source and formation tration, which contributes 60.8% of the observed daytime HONO. |
| 刊物名称: |
SCIENCE OF THE TOTAL ENVIRONMENT |
| 英文刊物名称: |
SCIENCE OF THE TOTAL ENVIRONMENT |
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| 全文链接: |
http://www.sciencedirect.com/science/article/pii/S0048969717304151 |
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