@Article{AlvimGCCRPSYOS:2017:ObMoIm,
author = "Alvim, D{\'e}bora Souza and Gatti, Luciana Vanni and Corr{\^e}a,
Sergio Machado and Chiquetto, J{\'u}lio Barboza and Rossatti,
Carlos de Souza and Pretto, Ang{\'e}lica and Santos, Maria Helena
dos and Yamazaki, Am{\'e}lia and Orlando, Jo{\~a}o Paulo and
Santos, Guaciara Macedo",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Estadual
do Rio de Janeiro (UERJ)} and {Universidade de S{\~a}o Paulo
(USP)} and {Universidade de S{\~a}o Paulo (USP)} and {Instituto
de Pesquisas em Energia Nuclear (IPEN)} and {Instituto de
Pesquisas em Energia Nuclear (IPEN)} and {Instituto de Pesquisas
em Energia Nuclear (IPEN)} and {Instituto de Pesquisas em Energia
Nuclear (IPEN)} and {University of California}",
title = "Main ozone-forming VOCs in the city of Sao Paulo: observations,
modelling and impacts",
journal = "Air Quality, Atmosphere and Health",
year = "2017",
volume = "10",
number = "4",
pages = "421--435",
month = "May",
keywords = "Atmospheric chemistry, Incremental reactivity, Ozone-forming
potential, Volatile organic compounds.",
abstract = "High-ozone concentrations currently represent the main air
pollution problem in the city of S{\~a}o Paulo, Brazil. To
elucidate the main volatile organic compounds (VOCs), which act as
ozone precursors, samples from air quality monitoring stations
were evaluated. Thirty-five samples were collected in
AugustSeptember of 2006 and 43 in JulyAugust of 2008, when the
consumption of ethanol was about 50 % of the total fuel used in
the S{\~a}o Paulo Metropolitan Area. Samples were collected using
electropolished stainless canisters. Chemical analyses were
performed on pre-concentrated samples followed by gas
chromatograph with flame ionization and mass spectrometry
detection. The incremental reactivity scale was used to rank the
ozone precursors using the Ozone Isopleth Package for Research
(OZIPR) trajectory model coupled with chemical mechanism Statewide
Air Pollution Research Center (SAPRC). Sixty-nine species of VOCs
were quantified, and the ten main ozone precursors identified in
2008 were as follows: formaldehyde (42.8 %), acetaldehyde (13.9
%), ethene (12.2 %), propene (5.1 %), 1-methylcyclopentene (3.0
%), p-xylene (2.4 %), 1-butene (2.1 %), trans-2-pentene (1.9 %),
2-methyl 2-butene (1.7 %) and trans-2-butene (1.6 %). Volatile
organic compound mass distribution showed that in 2008 alkanes
represented 46 % of the total VOCs, alkenes 27 %, aromatics 14 %,
alkadienes 1 % and aldehydes 12 %.",
doi = "10.1007/s11869-016-0429-9",
url = "http://dx.doi.org/10.1007/s11869-016-0429-9",
issn = "1873-9318",
language = "en",
urlaccessdate = "27 abr. 2024"
}