Concentrations of PAHs, and nitro- and methyl- derivatives associated with a size-segregated urban aerosol

Filippo, Patrizia Di; Riccardi, Carmela; Pomata, Donatella; Buiarelli, Francesca

doi:10.1016/j.atmosenv.2010.04.035

Cited by 69 publications

(33 citation statements)

References 24 publications

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“…In the MAPA, which has a strong influence of traffic from heavy-duty gasoline and diesel vehicles, there is an increase in the emissions from primary sources of combustion during the winter (e.g., motor vehicles) and a decrease in photochemical oxidation of PAHs by solar radiation. Consequently, those conditions favor PAHs accumu lation in the atmospheric particles (Di Filippo et al 2010). These data are similar to those already reported in previous studies, e.g.…”

supporting

confidence: 82%

Estimated atmospheric emissions from biodiesel and characterization of pollutants in the metropolitan area of Porto Alegre-RS

Teixeira

Mattiuzi

Feltes

et al. 2012

An. Acad. Bras. Ciênc.

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The purpose of the present study was to estimate emissions of some pollutants (CO, NO X , HC, SO X , and PM) in diesel fleet due to the addition of biodiesel in different blends, as well as to assess atmospheric pollutant concentrations in the metropolitan area of Porto Alegre (MAPA). The methodology was based on inventories from mobile sources based on US EPA's technical report. Regarding air quality the following parameters were determined: PM 10 , PM 2.5 , CO, NO X , O 3 , SO 2 , HC and PAHs. The results showed a decrease for emissions PM, CO, and HC, and a slight increase for NO X . The characterization of atmospheric pollutants in the metropolitan area of Porto Alegre showed that they are influenced by mobile sources, particularly diesel vehicles. The diagnosis of ratios analysis that was applied to facilitate the identification of sources of PAHs, indicated an influence of diesel oil.

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supporting

confidence: 82%

Estimated atmospheric emissions from biodiesel and characterization of pollutants in the metropolitan area of Porto Alegre-RS

Teixeira

Mattiuzi

Feltes

et al. 2012

An. Acad. Bras. Ciênc.

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“…The predominant mode was around 0.14 µm for both, HWNPAHs and LWNPAHs, and a little mode was observed in the super micrometre fraction at 1.4 µm. The observed distributions here seemed more similar (and especially for 9-nitroanthracene (9-NA)) to the results reported for a site downtown Rome (Italy) where the distributions of some NPAHs were bimodal (both in the sub micrometre fraction) with a major mode centered at D p = 0.4 µm (Di Filippo et al, 2010). Finally, NPAH size distributions obtained were really different than those observed by Albinet et al (2008a) on suburban sites in the French Alps.…”

Section: Particle Size Distribution Of Npah and Opahsmentioning

confidence: 38%

“…However, to date, only 8 authors reported results on the size distribution of NPAHs (Ladji et al, 2009;Hayakawa et al, 1995b;Albinet et al, 2008a;Cecinato et al, 1999;Di Filippo et al, 2010;Hayakawa et al, 1995a;Jinhui and Lee, 2000;Kawanaka et al, 2004Kawanaka et al, , 2008Teixeira et al, 2011), and only 4 papers focused on the particle size distribution of OPAHs (Albinet et al, 2008a;Allen, 1997;Allen et al, 1997;Ladji et al, 2009). This paper presents results from the study of the particle size distribution of OPAHs and NPAHs for two sites of different typology: traffic and suburban.…”

Section: Introductionmentioning

confidence: 99%

“…Note that, global uncertainties of measurement are in the range 51-308 %, with about 90 % due to the analytical procedure. (Zhang and McMurry, 1991;Di Filippo et al, 2010, and references therein). Second, the difference of technology between both samplers could play a role in the disparities observed.…”

Section: Comparison Of Npah and Opah Concentrations Determined With Bmentioning

confidence: 99%

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Particle size distribution of nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs and OPAHs) on traffic and suburban sites of a European megacity: Paris (France)

et al. 2012

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Abstract. The size distribution of particulate nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs and OPAHs) was determined during two field campaigns at a traffic site in summer 2010 and at a suburban site during the MEGAPOLI (Megacities: Emissions, urban, regional and Global Atmospheric POLlution and climate effects, and Integrated tools for assessment and mitigation) experiment in summer 2009. Both, OPAHs and NPAHs were strongly associated (>85 %) to fine particles (D p < 2.5 µm) increasing the interest of their study on a sanitary point of view. Results showed really different NPAH and OPAH particle size distributions between both sites. At traffic site, clearly bimodal (notably for NPAHs) particle size distributions (D p = 0.14 and 1.4 µm) were observed, while the particle size distributions were more scattered at the suburban site, especially for OPAHs. Bimodal particle size distribution observed at traffic site for the NPAH could be assigned to the vehicle emissions and the particle resuspension. Broadest distribution observed at the suburban site could be attributed to the mass transfer of compounds by volatilization/sorption processes during the transport of particles in the atmosphere. Results also showed that the combination of the study of particle size distributions applied to marker compounds (primary: 1-nitropyrene; secondary: 2-nitrofluoranthene) and to NPAH or OPAH chemical profiles bring some indications on their primary and/or secondary origin. Indeed, 1,4-anthraquinone seemed only primary emitted by vehicles while 7-nitrobenz[a]anthracene, benz [a]antracen7,12-dione and benzo [b]fluorenone seemed secondarily formed in the atmosphere.

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“…A better way is to multiply their respective concentrations and potency equivalency factors (PEFs), that is, total BaP carcinogenic equivalence concentrations (BaP-CEC), which are often used for risk assessment of PAHs. 39 In order to assess the risk of PAHs, seven priority PAHs including benz Table S4, ESI †. The PEFs developed by the Office of Environmental Health Hazard Assessment (OEHHA) by comparing the cancer activity of the chemicals relative to BaP, 40 were applied in the present study (Table 3) ) in this study (Table S4, ESI †).…”

Section: Health Risk Assessmentmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons with molecular weight 302 in PM2.5 at two industrial sites in South China

et al. 2011

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in an industrial complex site (site A) and an electronic waste recycling site (site B) to determine the seasonal and diurnal variations of 19 individual polycyclic aromatic hydrocarbons (PAHs) with molecular weight 302 (MW302) including four highly carcinogenic dibenzopyrene (DBP) isomers dibenzo [a,l] [a,e]fluoranthene (DBaeF), constituting 52.0 to 55.4% of the total MW302 isomers. All the MW302 isomers showed notable seasonal variations. Most of the MW302 isomers in site B showed distinctive diurnal variations with higher concentrations occurring in the night. Taking into account both concentration and potency equivalence factors (PEFs), the strongest carcinogen in the analyzed samples was DBaiP, and the ratios of sum carcinogenic potency of four highly carcinogenic DBP isomers to benzo[a]pyrene (BaP) was about 0.94 in winter to 1.89 in summer, indicating the importance of DBP isomers for the risk assessment. Health risk assessment indicated that on average, 1 in 100 000 residents in the two industrial sites may have an increased risk of cancer due to PAH exposure.

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Concentrations of PAHs, and nitro- and methyl- derivatives associated with a size-segregated urban aerosol

Cited by 69 publications

References 24 publications

Estimated atmospheric emissions from biodiesel and characterization of pollutants in the metropolitan area of Porto Alegre-RS

Estimated atmospheric emissions from biodiesel and characterization of pollutants in the metropolitan area of Porto Alegre-RS

Particle size distribution of nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs and OPAHs) on traffic and suburban sites of a European megacity: Paris (France)

Polycyclic aromatic hydrocarbons with molecular weight 302 in PM2.5 at two industrial sites in South China

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