Long-term trends of Nitrogen oxides and surface ozone concentrations in Tehran city, 2002–2011

• DOI: 10.1186/s40201-015-0218-7
• Publication Date: 2015-09-15T15:28:45Z
• Authors: Saeed Motesaddi Z...; Mahmood Alimohammadi; Vahid Kazemi Mogh...; Mohammad Sadegh H...; Mohammad Bagher M...; Davarkhah Rabbani; Gholam Reza Mosta...; Vali Sarsangi; Sajjad Hajiketabi; Ashraf Mazaheri T...
• Keywords: Tropospheric ozone; Nitrogen oxides; Nitrogen oxides

Tropospheric ozone is a problem with multi aspects - hazard to human health, plant, and welfare key factor climate change, air pollution atmosphere chemistry, as well. Behavior of nitrogen oxides (NO, NO2) concentration highly complex variable; therefore, their trends short long-term were significantly attended. Most the studies carried out on behavior pollutant concentrations in North America, Europe, East Asia, but few have been conducted west Asia. The aim this study was assess daily changes trend Tehran city, Iran from March 2002 September 2011.Data collected 18 quality monitoring stations. data sorted mean 10 years (daily changes) annual for each year (long-term trend). One-sample test used statistical significance.Current findings indicated that ozone, NO, NO2 are dependent job shifts photochemical reactions. Annual gradually increased, indicated. correlation between long term significant (p < 0.05).The controlling program most important oxides, some problems difficulties accounted perform program.