| 广州秋季HONO污染特征及夜间来源分析 |
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| 引用本文： | 田智林,杨闻达,虞小芳,张曼曼,张贺伟,程丁,程鹏,王伯光.广州秋季HONO污染特征及夜间来源分析[J].环境科学,2018,39(5):2000-2009. |
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| 作者姓名： | 田智林 杨闻达 虞小芳 张曼曼 张贺伟 程丁 程鹏 王伯光 |
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| 作者单位： | 暨南大学质谱仪器与大气环境研究所;暨南大学环境与气候研究院;广东省大气污染在线源解析系统工程技术研究中心 |
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| 基金项目： | 国家自然科学基金青年科学基金项目（41405002）；国家重点研发计划项目（2017YFC0210104）；科技部科技支撑计划项目（2014BAC21B01） |
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| 摘 要： | 大气亚硝酸(HONO)光解是对流层大气中OH自由基(·OH)的主要来源,对光化学过程具有重要作用,但其夜间化学过程的研究较为薄弱.本文利用2015年10月暨南大学大气超级站的HONO及相关参数的观测数据,针对夜间HONO的污染过程和来源进行了分析.结果表明广州秋季HONO夜间浓度平均值为4.32μg·m~(-3),是日间浓度平均值(1.67μg·m~(-3))的2.6倍;夜间HONO平均转化率CHONO为0.006 8 h-1;夜间机动车直接排放对HONO的平均贡献为15.1%,并在20:00左右出现峰值(37.8%);夜间NO和·OH反应生成HONO的净速率平均值为0.44μg·(m~3·h)~(-1);相关性分析,发现大气颗粒物对HONO的生成不重要,但相对湿度(33%RH78%)对HONO生成具有显著促进作用.相关计算表明沉降的NO_2与水汽在地表的非均相反应可能是夜间HONO的主要来源.
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| 关 键 词： | 气态亚硝酸 污染特征 夜间来源 直接排放 气相反应 |
| 收稿时间： | 2017/9/28 0:00:00 |
| 修稿时间： | 2017/12/5 0:00:00 |
HONO Pollution Characteristics and Nighttime Sources During Autumn in Guangzhou, China |
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| TIAN Zhi-lin,YANG Wen-d,YU Xiao-fang,ZHANG Man-man,ZHANG He-wei,CHENG Ding,CHENG Peng and WANG Bo-guang.HONO Pollution Characteristics and Nighttime Sources During Autumn in Guangzhou, China[J].Chinese Journal of Environmental Science,2018,39(5):2000-2009. |
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| Authors: | TIAN Zhi-lin YANG Wen-d YU Xiao-fang ZHANG Man-man ZHANG He-wei CHENG Ding CHENG Peng and WANG Bo-guang |
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| Institution: | Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China,Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China,Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China,Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China,Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China,Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China,Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou 510632, China and Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China |
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| Abstract: | |
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| Keywords: | nitrous acid pollution characteristics nighttime sources direct emission gas-phase reaction |
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