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| 天津中心城区夏季非甲烷有机化合物组成特征及其臭氧产生潜力分析 | |
| 引用本文： | 卢学强,韩萌,冉靓,韩素芹,赵春生.天津中心城区夏季非甲烷有机化合物组成特征及其臭氧产生潜力分析[J].环境科学学报,2011,31(2):373-380. |
| 作者姓名： | 卢学强 韩萌 冉靓 韩素芹 赵春生 |
| 作者单位： | 1. 天津市环境保护科学研究院,天津,300191 2. 北京大学物理学院大气科学系,北京,100871 3. 天津市气象科学研究所,天津,300074 |
| 基金项目： | 环保部国家公益性行业科研专项项目（No. 200909022）；天津市科委基础与应用基础研究项目（No. 10JCYBJC05800） |
| 摘 要： | 大气中非甲烷有机化合物(NMOCs)作为臭氧产生前体物之一,其浓度与组成特征研究对于研究地面臭氧形成的机制有重要的科学意义.选择夏季时段从2009年8月6日到13日在天津中心城区气象局铁塔站位对NMOCs进行采样分析,采样频次为每日5次,采样时间从7:30am到23:00pm间隔2～3h采样1次.天津城区NMOCs的含... |
| 关 键 词： | 非甲烷有机化合物(NMOCs) 臭氧产生潜力 天津中心城区 |
| 收稿时间： | 6/1/2010 12:25:06 AM |
| 修稿时间： | 2010/7/12 0:00:00 |
Characteristics of nonmethane organic compounds and their ozone formation potentials in downtown Tianjin in summer |
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| LU Xueqiang,HAN Meng,RAN Liang,HAN Suqin and ZHAO Chunsheng.Characteristics of nonmethane organic compounds and their ozone formation potentials in downtown Tianjin in summer[J].Acta Scientiae Circumstantiae,2011,31(2):373-380. | |
| Authors: | LU Xueqiang HAN Meng RAN Liang HAN Suqin and ZHAO Chunsheng |
| Institution: | Tianjin Academy of Environmental Sciences, Tianjin 300191,Tianjin Academy of Environmental Sciences, Tianjin 300191,Department of Atmospheric Science, School of Physics, Peking University, Beijing 100871,Tianjin Institute of Meteorology, Tianjin 300074 and Department of Atmospheric Science, School of Physics, Peking University, Beijing 100871 |
| Abstract: | Because of the importance of NMOC as one of precursors of tropospheric ozone, their composition and ozone formation potentials of various NMOCs species help better understand the ozone formation mechanism. NMOCs sampling with an interval of 2-3 hours from 7:30 am- 23:00 pm (five times per day) was conducted from 6 to 13 August, 2010 at Tianjin Meteorology Bureau Tower, Tianjin downtown area. The mean concentration of daily NMOCs is 342 ppbC and the major components are alkanes and aromatics. According to the assessment using both OH-reactivity-based method (propene-equivalent concentration) and maximum incremental reactivity, aromatics play a dominant role in contributing to ozone photochemical production. Despite of their lowest mixing ratio, alkenes are the next to aromatics for contribution to ozone formation. Butene, xylene and trimethybenzene are found to be among the top compounds with ozone formation potentials. Comparison to urban Shanghai, both mean concentration and concentration range of NMOCs in Tianjin downtown area are much greater than those in unban Shanghai within the sampling period. |
| Keywords: | Nonmethane organic compounds (NMOCs) Ozone formation potential urban Tianjin |
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