An observational study of the HONO-NO2 coupling at an urban site in   Guangzhou City, South China

doi:10.1016/j.atmosenv.2009.08.017

CORC > 北京大学 > 环境科学与工程学院

	An observational study of the HONO-NO2 coupling at an urban site in Guangzhou City, South China
	Qin, Min ; Xie, Pinhua ; Su, Hang ; Gu, Jianwei ; Peng, Fumin ; Li, Suwen ; Zeng, Limin ; Liu, Jianguo ; Liu, Wenqing ; Zhang, Yuanhang
刊名	大气环境
	2009
关键词	Atmospheric chemistry Air Pollution Heterogeneous conversion Nitrous acid DOAS ABSORPTION CROSS-SECTIONS NITROUS-ACID HONO PHOTOCHEMICAL PRODUCTION AEROSOL SURFACES HETEROGENEOUS HYDROLYSIS TEMPERATURE-DEPENDENCE BOUNDARY-LAYER WATER-VAPOR NITRIC-ACID HUMIC-ACID
DOI	10.1016/j.atmosenv.2009.08.017
英文摘要	The temporal behavior of HONO and NO2 was investigated at an urban site in Guangzhou city, China, by means of a DCAS system during the Pearl River Delta 2006 intensive campaign from 10 to 24 July 2006. Within the whole measurement period, unexpected high HONO mixing ratios up to 2 ppb were observed even during the day. A nocturnal maximum concentration of about 8.43 +/- 0.4 ppb was detected on the night of 24 July 2006. Combining the data simultaneously observed by different instruments, the coupling of HONC-NO2 and the possible formation sources of HONO are discussed. During the measurement period, concentration ratios of HONO to NO2 ranged from (0.03 +/- 0.1) to (0.37 +/- 0.09), which is significantly higher than previously reported values (0.01-0.1). Surprisingly, in most cases a strong daytime correlation between HONO and NO2 was found, contrary to previous observations in China. Aerosol was found to have a minor impact on HONO formation during the whole measurement period. Using a pseudo steady state approach for interpreting the nocturnal conversion of NO2 to HONO suggests a non-negligible role of the relative humidity for the heterogeneous HONO formation from NO2. (C) 2009 Elsevier Ltd. All rights reserved.; Environmental Sciences; Meteorology & Atmospheric Sciences; SCI(E); EI; 25; ARTICLE; 36; 5731-5742; 43
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/245189]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Qin, Min,Xie, Pinhua,Su, Hang,et al. An observational study of the HONO-NO2 coupling at an urban site in Guangzhou City, South China[J]. 大气环境,2009.
APA	Qin, Min.,Xie, Pinhua.,Su, Hang.,Gu, Jianwei.,Peng, Fumin.,...&Zhang, Yuanhang.(2009).An observational study of the HONO-NO2 coupling at an urban site in Guangzhou City, South China.大气环境.
MLA	Qin, Min,et al."An observational study of the HONO-NO2 coupling at an urban site in Guangzhou City, South China".大气环境 (2009).