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Abstract of the Article

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Quality Evaluation of Indoor Air of Residential Houses in Regions 1 and 5 of Tehran due Nitrogen Dioxide

Authors:
[ Mansor Ghassedin ] - Power Tecknology Development Center, Tehran, Iran
[ Farideh Atabi ] - Science and Reaserch Campus, Islamic Azad University, Iran
[ Zohreh Hesami ] - Science and Reaserch Campus, Islamic Azad University, Iran
[ Mahmod Mahmodi ] - Biostatestical University, Tehran University, Iran

Abstract:

Population growth, urbanization, changes in people living methods and also countless sources of air pollution in closed urban environments have all caused lots of problems like different kinds of environmental pollution. Nowadays big cities like Tehran are faced with these problems' consequences so intensively that different air pollutants concentrations increase day by day. Air pollution studying includes both indoor and outdoor air quality parameters. Furthermore, considering that people pass most of their time in closed spaces and indoor environments, magnifies the significance of indoor air quality studying. One of the important air pollutants is Nitrogen Dioxide that have a different health effect like eye, nose and throat irritation, lung problems and respiratory infections in young children. So, in this research, the indoor air quality of residential houses in region 1 and 5 of Tehran has been studied with more emphasis on NO2. Some sampling stations (20 houses) have been selected on the basis of frequent surveys of the regions and the related maps to measure the pollutants and the sampling duration was five months. According to the analysis of the results of the samplings, the findings for regions 1 and 5 are as mentioned below, which would be the basis of air quality improvement approaches in the residential areas of these regions. - NO2 level in the first floor of the buildings has been more than the others. - NO2 level in the stations near the street in region 1 has been more than region 5. - NO2 level in the stations located in the allies in region 1 has been more than region 5. - NO2 level in the stations which are near the street has been less than the stations which are located in the allies, in regions 1. Steps to reduse exposure: keep gas appliances properly adjusted, consider purchasing a vented spase heater when replacing an un-vented one, install and use an exhaust fan vented and hood at kitchen, choose properly sized stoves, have trainedprofessional inspect,clean heating system annually,repair any leaks promptly anddo not idle the car inside garage.

Keywords:

Indoor air quality, Nitrogen Dioxide, Measurement stations, Region 1 and 5 of Tehran