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title Hopanoid hydrocarbons in PM10 from road tunnels in So Paulo, Brazil
authors Alves, CA; Vicente, AM; Rocha, S; Vasconcellos, P
author full name Alves, Celia A.; Vicente, Ana M.; Rocha, Sonia; Vasconcellos, Perola
title Hopanoid hydrocarbons in PM10 from road tunnels in So Paulo, Brazil
nationality internacional
language English
document type Article
author keywords PM10; Road tunnels; Flexible fuel vehicles; Brazil; Hopanes
abstract The fleet of flexible fuel vehicles in Brazil is the largest in the world. To diagnose the contribution of vehicle emissions to atmospheric particulate matter, organic molecular markers, such as hopanes, can be used. However, nothing is known about the particulate matter mass fractions of these tracers in environments exclusively impacted by road emissions. In this study, the hopanoid composition of PM10 inside two tunnels in the So Paulo metropolitan area with very distinct circulating fleets (JA cent nio Quadros (JQ) and Rodoanel (RA)) was obtained. Higher mean concentrations (82.4 ng m(-3)) and PM10 mass fractions (239 ng mg(-1)) were obtained in RA, in which the fleet is composed of both light and heavy duty vehicles. The most abundant species were 17 alpha(H),21 beta(H)-30-norhopane (27.9 ng mg(-1) in JQ, 47.9 ng mg(-1) in RA) and 17 alpha(H),21 beta(H)-hopane (32.6 ng mg(-1) in JQ, 44.3 ng mg(-1) in RA). Diverse concentration ratios were calculated and compared with those of other sources. Overlapping values may preclude the use of these parameters as source assignment tools. Some compounds, such as 18 alpha(H)-22,29,30-trisnorneohopane, 17 alpha(H)-22,29,30-trisnorhopane, 17 alpha(H),21 beta(H)-30-norhopane, 18 alpha(H)-30-norneohopane, 17 alpha(H),21 beta(H)-hopane, 17 alpha(H),21 beta(H)-22S-homohopane and 17 alpha(H),21 beta(H)-22R-homohopane, were found to be very good predictors of the total concentrations of hopanoids.
author address [Alves, Celia A.; Vicente, Ana M.; Rocha, Sonia] Univ Aveiro, Dept Environm, Ctr Environm & Marine Studies, P-3810193 Aveiro, Portugal; [Vasconcellos, Perola] Univ Sao Paulo, Chem Inst, Cidade Univ, BR-05508900 Sao Paulo, SP, Brazil
reprint address Alves, CA (reprint author), Univ Aveiro, Dept Environm, Ctr Environm & Marine Studies, P-3810193 Aveiro, Portugal.
e-mail address celia.alves@ua.pt
researcherid number Alves, Celia/E-7583-2013
orcid number Alves, Celia/0000-0003-3231-3186; Vicente, Ana/0000-0002-6319-0265
funding agency and grant number Research Foundation of the State of Sao Paulo (FAPESP) [2008/58104-8]; National Council for Scientific and Technological Development (CNPq) [402383/2009-5]; Portuguese Foundation for Science and Technology (FCT) [UID/AMB/50017/2013]; FCT [SFRH/BPD/88988/2012]
funding text The sampling programme was supported by the Research Foundation of the State of Sao Paulo (FAPESP, project 2008/58104-8) and by the National Council for Scientific and Technological Development (CNPq, project 402383/2009-5). Perola Vasconcellos thanks INCT-Energy and Environment. The analytical work benefited from funds allocated by the Portuguese Foundation for Science and Technology (FCT) to the Centre for Environmental and Marine Studies (CESAM) through the strategic project UID/AMB/50017/2013. Ana Vicente acknowledges the postdoc grant SFRH/BPD/88988/2012 from FCT.
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cited reference count 36
publisher city CHAM
publisher address GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND
issn 1873-9318
29-character source abbreviation AIR QUAL ATMOS HLTH
iso source abbreviation Air Qual. Atmos. Health
publication date SEP
year published 2017
volume 10
issue 7
beginning page 799
ending page 807
digital object identifier (doi) 10.1007/s11869-017-0462-3
subject category 9
document delivery number Environmental Sciences
unique article identifier Environmental Sciences & Ecology
link http://dx.doi.org/10.1007/s11869-017-0462-3