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Bull Environ Contam Toxicol

Title:		"Preliminary Study of Ambiente Levels and Exposure to BTEX in the Rio de Janeiro Olympic Metropolitan Region, Brazil"
Author(s):		da Silva CM; Correa SM; Arbilla G;
Address:		"Campus de Maracana, Universidade Veiga de Almeida, State of Rio de Janeiro, 20271-020, Rio de Janeiro, Brazil. martins.cleyton@gmail.com. Instituto de Quimica, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, State of Rio de Janeiro, 21941-909, Brazil. martins.cleyton@gmail.com. Faculdade de Tecnologia, Universidade do Estado do Rio de Janeiro, Resende, State of Rio de Janeiro, 27537-000, Brazil. Instituto de Quimica, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, State of Rio de Janeiro, 21941-909, Brazil"
Journal Title:		Bull Environ Contam Toxicol
Year:		2020
Volume:		20200424
Issue:		6
Page Number:		786 - 791
DOI:		10.1007/s00128-020-02855-4
ISSN/ISBN:		1432-0800 (Electronic) 0007-4861 (Linking)
Abstract:		"This study aims to determine BTEX concentrations in the Metropolitan Region of Rio de Janeiro (MRRJ, Brazil) and evaluate potential health risks of benzene and ethylbenzene exposure based on the collected data, in 2015, the year before the Rio 2016 Olympic Games. Samples were collected and analyzed following method TO-15 (U.S.EPA). Toluene was the most abundant compound in all samples (mean concentration 16.72 +/- 15.70 microg m(-3)). The average benzene concentration in ambient air (3.44 +/- 3.14 microg m(-3)) was slightly lower than the yearly average 'upper assessment threshold', 3.5 microg m(-3), established by EU Directive 2008/50/EC. The calculated cancer risk values were > 1 x 10(-6) for all samples, clearly indicating a potential cancer risk and the importance of fixed measurements by the monitoring stations to assess ambient air quality in the urban areas of the MRRJ. Calculated ratios for the BTEX species indicate that these compounds are predominantly emitted from vehicular sources with a contribution from industrial sources"
Keywords:		Air Pollutants/*analysis Benzene/*analysis Benzene Derivatives/*analysis Brazil Cities Environmental Monitoring/*methods Humans Inhalation Exposure/*analysis Risk Assessment Toluene/*analysis Xylenes/*analysis Btex Benzene exposure Health risk Volatile or;
Notes:		"Medlineda Silva, Cleyton Martins Correa, Sergio Machado Arbilla, Graciela eng 2020/04/26 Bull Environ Contam Toxicol. 2020 Jun; 104(6):786-791. doi: 10.1007/s00128-020-02855-4. Epub 2020 Apr 24"