System Designed to Measure BTEXs Pollutants in Exhaust Gas Output of Domestic and Foreign Cars in Tehran

Document Type : Research Paper

Authors

1 Analytical Chemistry Research Group, Research Institute of Petroleum Industry (RIPI), Tehran, Iran

2 Environment and Biotechnology Department, Research Institute of Petroleum Industry (RIPI), Tehran, Iran

3 National Iranian Oil Refining and Distribution Company, Research and Technology Directorate, Tehran, Iran

Abstract

In this report, the amount of emissions of benzene, toluene, ethylbenzene and xylenes (BTEXs) in the exhaust gas of numerous domestic and foreign automobiles including PrideTM, Peugeot 405TM, Thunder (L90) TM, Peugeot 206TM TibaTM, and Mazda 3TM and SamandTM both in the absence and presence of a catalyst, were measured in the Tehran city. To this end, first the BTEXs content of the exhaust gases was absorbed on activated carbon cartridges and then extracted by using solvent system. Finally, the concentration of the extracted pollution was identified and measured through gas chromatography Equipped with a flame ionization detector (GC/FID). The results clearly show that the volume of this emitted pollution of domestic automobiles comparatively is much higher than that of the foreign cars tested (The average BTEX concentration in the exhaust car of the pride vehicle was 13.3 parts per million versus 0.1 parts per million for the Mazda3.). From the domestic cars after PrideTM, Peugeot 405TM had the highest (6.13 parts per million BTEX concentrations in the exhaust), and SamandTM with a catalyzer system (1.49 parts per million BTEX concentrations in the exhaust) had the lowest amounts of the emitted pollutants. Due to the multiplicity of domestic vehicles in comparison with foreign cars in Iran and naturally in Tehran, it is expected that these compounds in the air of Tehran and other large cities will be higher than the permissible ambient air (average annual rate of 5 micrograms per m3). Finally, the results of other investigations confirm this. In addition, the results of this research will provide a meaningful initial assessment for the implementation of complementary research to lead organizations responsible for improving the quality of the environment, fuel suppliers and care companies.
 

Keywords

References

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Journal of Petroleum Research
Volume 29, 98-4 - Serial Number 107
November and December 2019
Pages 62-73

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