TITLE

Ozone production and hydrocarbon reactivity in Hong Kong, Southern China

AUTHOR(S)
Zhang, J.; Wang, T.; Chameides, W. L.; Cardelino, C.; Kwok, J.; Blake, D. R.; Ding, A.; So, K. L.
PUB. DATE
January 2007
SOURCE
Atmospheric Chemistry & Physics;2007, Vol. 7 Issue 2, p557
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Data obtained in Hong Kong during the Hong Kong and the Pearl River Delta (PRD) Pilot Air Monitoring Study in autumn 2002 are analyzed to unravel the relationship between ground-level ozone (O3), pollution precursors, and cross-border transport. Ten ozone episodes, during which the hourly O3 concentration exceeded 100 ppbv in 9 cases and 90 ppbv in one case, are subject to detailed analysis, including one case with hourly O3 of 203 ppbv, which is the highest concentration on record to date in Hong Kong. Combined with high-resolution back trajectories, dCO/dNOy (the ratio of enhancement of CO concentration above background to that of NOy) is used to define whether O3 is locally or regionally produced. Five out of the ten Hong Kong O3-episodes studied show a "pollution signature" that is indicative of impact from Guangdong Province. Examination of speciated volatile organic compounds (VOCs) shows that the reactivity of VOCs is dominated by anthropogenic VOCs, of which the reactive aromatics dominate, in particular xylenes and toluene. Calculations using a photochemical box model indicate that between 50-100% of the O3 increase observed in Hong Kong during the O3 episodes can be explained by photochemical generation within the Hong Kong area, provided that nitrous acid (HONO) is present at the concentrations derived from this study. An Observation-Based Model (OBM) is used to calculate the sensitivity of the O3 production to changes in the concentrations of the precursor compounds. Generally the production of O3 throughout much of the Hong Kong area is limited by VOCs, while high nitric oxide (NO) concentrations suppress O3 concentration.
ACCESSION #
24264759

 

Related Articles

  • Retrospective Air Quality Simulations of the TexAQS-II: Focused on Emissions Uncertainty. DaeGyun Lee; Soontae Kim; Hyuncheol Kim; Fong Ngan // Asian Journal of Atmospheric Environment (AJAE);Dec2014, Vol. 8 Issue 4, p212 

    There are several studies on the effects of emissions of highly reactive volatile organic compounds (HRVOC) from the industrial sources in the Houston-Galveston-Brazoria (HGB) area on the high ozone events during the Texas Air Quality Study (TexAQS) in summer of 2000. They showed that the...

  • High temporal resolution measurements of ozone precursors in a rural background station. A two-year study. Navazo, M.; Durana, N.; Alonso, L.; Gómez, M. C.; García, J. A.; Ilardia, J. L.; Gangoiti, G.; Iza, J. // Environmental Monitoring & Assessment;Jan2008, Vol. 136 Issue 1-3, p53 

    We present a very complete database of individual non-methane hydrocarbon (NMHC) measurements with high temporal resolution (hourly) in a rural background atmosphere. We show their use to characterize the biogenic NMHC as well as to identify the transport and impact of anthropogenic NMHC on...

  • Atmospheric Volatile Organic Compound Monitoring. Ozone Induced Artefact Formation. Bates, Matthew S.; Gonzalez-Flesca, Norbert; Sokhi, Ranjeet; Cocheo, Vincenzo // Environmental Monitoring & Assessment;Nov2000, Vol. 65 Issue 1/2, p89 

    Assessment of population exposure to VOC in ambient atmospheres is receiving heightened interest as the adverse health effects of chronic exposure to certain of these compounds are identified. Active (pumped) and passive samplers are the most commonly used devices for this type of monitoring. It...

  • Assessing Near-Field and Downwind Impacts of Reactivity-Based Substitutions. Capps, Shannon L.; Hu, Yongtao; Russell, Armistead G. // Journal of the Air & Waste Management Association (Air & Waste M;Mar2010, Vol. 60 Issue 3, p316 

    Three-dimensional chemical transport modeling of six different solvent substitution test scenarios was used to investigate possible transport effects of using volatile organic compound (VOC) reactivity scales for air quality management purposes with a particular focus on the northeastern United...

  • Sources and Variability of Indoor and Outdoor Gaseous Aerosol Precursors (O3, NOx and VOCs). Lazaridis, M.; Aleksandropoulou, V. // Water, Air & Soil Pollution: Focus;Jan2009, Vol. 9 Issue 1/2, p3 

    Measurements of indoor and outdoor aerosol concentrations and their gaseous precursors (O3, NO and NO2) as well as volatile organic compounds (VOCs) concentrations were performed at two houses in the Oslo metropolitan area. The variability of the concentration of gaseous compounds was studied in...

  • Stack VOC Determination using a Portable, Cutting Edge Analyser.  // International Environmental Technology;2015/2016 Buyers' Guide, Vol. 25 Issue 4, p14 

    The article evaluates the the Polaris FID analyser, a portable Volatile Organic Compound (VOC) monitor from Pollution Srl based in Italy.

  • Variation Characteristics of Volatile Organic Compounds in an Urban Atmosphere in Nigeria. Olumayede, Emmanuel Gbenga; Okuo, James Majebi // Polish Journal of Environmental Studies;2012, Vol. 21 Issue 1, p177 

    The living patterns of people may create different variations in concentrations of air pollutants in urban setting. Ambient VOCs measured in the Nigerian urban center of Benin City were analyzed and evaluated for variation characteristics; spatial, seasonal, and diurnal patterns of air...

  • Fugitive Coke Oven Gas Emission Profile by Continuous Line Averaged Open-Path Fourier Transform Infrared Monitoring. Chitsan Lin; Naiwei Liou; Pao-Erh Chang; Jen-Chin Yang; Endy Sun // Journal of the Air & Waste Management Association (Air & Waste M;Apr2007, Vol. 57 Issue 4, p472 

    Although most coke oven research is focused on the emission of polycyclic aromatic hydrocarbons, well-known carcinogens, little has been done on the emission of volatile organic compounds, some of which are also thought to be hazardous to workers and the environment. To profile coke oven gas...

  • Distribution, Temporal and Diurnal Behaviors of Total Volatile Organic Compounds over the Urban Atmosphere of Southwestern Nigeria. Olumayede, Emmanuel Gbenga; Okuo, James Majebi // Journal of Environmental Science & Engineering: A;Jun2012, Vol. 1 Issue 6A, p785 

    The variations in concentrations of air pollutants in an urban setting depend on the living pattern of the people, traffic flow, and meteorological conditions. Ambient VOCs (volatile organic compounds) measured in two urban centers of southwestern Nigeria were analyzed and evaluated for the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics