title: Measurements of NO and CO in Shanghai urban atmosphere by using quantum cascade lasers.
abstract: Nitric oxide (NO) and carbon monoxide (CO) in Shanghai urban atmosphere have been measured during the EXPO 2010 by an optical trace gas monitoring system based on room-temperature pulsed quantum cascade lasers (QCL). The results showed obvious diurnal variation in their concentrations. A great correlation was found by analyzing the diurnal variation, indicating common emission sources for both NO and CO. However analysis of the data from street canyon measurements showed that on a vehicle-by-vehicle basis NO emissions correlated only weakly with CO emissions. A possible explanation to this issue has been given.
authors: Key Lab. of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China.
authors: Tang
authors: T
authors: Yuanyuan
authors: Liu
authors: L
authors: Wenqing
authors: Kan
authors: K
authors: Ruifeng
authors: Liu
authors: L
authors: Jianguo
authors: He
authors: H
authors: Yabai
authors: Zhang
authors: Z
authors: Yujun
authors: Xu
authors: X
authors: Zhenyu
authors: Ruan
authors: R
authors: Jun
authors: Geng
authors: G
authors: Hui
mesh_terms: D000042:Absorption; D000393:Air Pollutants; D000397:Air Pollution; D001272:Atmosphere; D015374:Biosensing Techniques; D002248:Carbon Monoxide / Q000737:chemistry*; D002681:China; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods; D004867:Equipment Design; D007834:Lasers; D009569:Nitric Oxide / Q000737:chemistry*; D011789:Quantum Theory; D012666:Semiconductors; D013053:Spectrophotometry / Q000379:methods; D013055:Spectrophotometry, Infrared / Q000379:methods; D013696:Temperature; D013997:Time Factors
chemical_list: D000393:Air Pollutants; D009569:Nitric Oxide; D002248:Carbon Monoxide