Observation of the nighttime nitrate radical in Hefei, China  

作　　者：LI Suwen LIU Wenqing XIE Pinua LI Ang QIN Min PENG Fumin ZHU Yanwu 

机构地区：[1]Key Laboratory of Environmental Optical and Technology, Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Hefei 230031, China

出　　处：《Journal of Environmental Sciences》2008年第1期45-49,共5页环境科学学报（英文版）

摘　　要：Observation of nighttime nitrate radical （NO3） was performed by using long path differential optical absorption spectroscopy （LP- DOAS）, on the outskirts of Hefei, China. The time series of NO3 and supporting parameters were simultaneously measured for a week （31 May-7 June 2006）. The results indicated that the average concentration of NO3 was 15.6 pptv with an average lifetimes of 96 s, whereas, NO3 production rates varied from 8×10^2/（cm^3·s） to 2.98×10^7/（cm^3·s）. Furthermore, the calculated N2O5 concentration averaged at 380 pptv. Analysis of data indicated that direct sinks were probably dominating the NO3 loss process during this campaign. The results were compared with other campaigns in the boundary layer.Observation of nighttime nitrate radical （NO3） was performed by using long path differential optical absorption spectroscopy （LP- DOAS）, on the outskirts of Hefei, China. The time series of NO3 and supporting parameters were simultaneously measured for a week （31 May-7 June 2006）. The results indicated that the average concentration of NO3 was 15.6 pptv with an average lifetimes of 96 s, whereas, NO3 production rates varied from 8×10^2/（cm^3·s） to 2.98×10^7/（cm^3·s）. Furthermore, the calculated N2O5 concentration averaged at 380 pptv. Analysis of data indicated that direct sinks were probably dominating the NO3 loss process during this campaign. The results were compared with other campaigns in the boundary layer.

关 键 词：nitrate radical nighttime chemistry differential optical absorption spectroscopy SINKS 

分 类 号：X831[环境科学与工程—环境工程]