Open AccessAssessment of daily variations of volatile organic compound in Tehran in 2010-2011
Author(s) -
Maryam Sarkhosh,
Amir Hossein Mahvi,
Mohsen Mohseni,
Leila Shiry,
Javad Alavi
Publication year - 2014
Publication title -
international journal of environmental health engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-9183
DOI - 10.4103/2277-9183.148279
Subject(s) - noon , morning , environmental science , volatile organic compound , environmental chemistry , toluene , air monitoring , ozone , diurnal temperature variation , environmental engineering , chemistry , meteorology , atmospheric sciences , geography , organic chemistry , medicine , geology
Aims: In accordance with the Air Clean Act developed for ozone monitoring, the measurement of volatile organic compounds (VOCs) based on photochemical assessment monitoring stations (PAMS) was carried out. Materials and Methods: Thirteen species of VOCs were measured on Enghelab square in Tehran by PhoCheck PID Detector at morning, noon, and afternoon for 3 months. The data were reported as descriptive statistics. Results: Most of the VOCs species showed diurnal variations with higher concentrations in the noon. The highest concentration of VOCs was aromatic group (AR: 0.549 ± 0.146 ppb). AR was the main contributor to photochemical smog.Conclusion: The majority of the AR class and toluene may be followed by the impacts of heavy traffic and the peak values of VOCs concentrations occurred around mid-day which depends indirectly upon vehicles and emission of evaporations