Abstract
The Metropolitan Region of Rio de Janeiro is the second largest urban and industrial region in Brazil. While the south and south-east areas are affected by vehicular emissions, the districts and cities located in the northern area are subjected to industrial emissions and have the poorest air quality of the region. In this study, BTEX concentrations were determined in the District of Irajá, a residential area located in the north of the city of Rio de Janeiro, approximately 25 km from the industrial zone, as well as in the District of Jardim Primavera, in the city of Duque de Caxias. The mean values for total BTEX concentrations were 38.4 ± 11.7 and 44.6 ± 29.3 μg m−3, in Irajá and Jardim Primavera, respectively, which are higher than those previously reported for other areas. The benzene/toluene rates, (approximately 0.5 for both sampling sites), were also higher than typical values that were determined for diesel and gasoline emissions through dynamometer experiments.
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Acknowledgements
The authors would like to express their thanks for the financial support provided by FAPERJ (Foundation for Research Support in the State of Rio de Janeiro) and CNPq (National Council for Scientific and Technological Development) (Brazil).
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Dantas, G., Gorne, I., da Silva, C.M. et al. Benzene, Toluene, Ethylbenzene and Xylene (BTEX) Concentrations in Urban Areas Impacted by Chemical and Petrochemical Industrial Emissions. Bull Environ Contam Toxicol 108, 204–211 (2022). https://doi.org/10.1007/s00128-021-03336-y
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DOI: https://doi.org/10.1007/s00128-021-03336-y