ALIPHATIC, POLYCYCLIC AROMATIC HYDROCARBONS AND NITRATED-POLYCYCLIC AROMATIC HYDROCARBONS IN PM₁₀IN SOUTHWESTERN MEXICO CITY

Organic Compound in Airborne Particles and their Genottoxic Effects in Mexico City

“…Concentrations quite similar to those PAH found by Stone et al (2008) in the Northern zone (urban site) were observed with those in the NW and the NE reported by Amador-Muñoz et al (2011). Saldarriaga et al (2008) found 9-nitroanthracene, indicating direct emission from diesel combustion, and heterogeneous nitrating reactions on sorbed particles, while 2-nitrofluoranthene, indicated atmospheric transformation. The total average concentration of PAH was 14 times greater than that of nitro-PAH, whereas the n-alkanes concentration was 17 times greater than that of PAH.…”

“…Greater human risk in the dry season was determined when the potential doses of carcinogenic PAH by inhalation were evaluated. In a campaign carried out from February to April in 2004 at the same sampling zone (Saldarriaga et al, 2008) PAH differences in space were also observed by Thornhill et al (2008), where different primary emission sources resulted in different PAH emitted concentrations in PM 10. This spatial heterogeneity implies the importance of the primary emission combustion sources in each site and implies that PAH concentrations in PM 10 in a specific site can not be extrapolated to other sites.…”

Air Quality Monitoring, Assessment and Management

“…PAH sum concentrations in the SW during 2003 found by Guzmán- Torres et al (2009) were similar to those found by Amador- compared with the dry season during 1998-1999, but higher compared with the rainy season in 1999. PAH sum in the Center and the SW reported by Guzmán- Torres et al (2009) were similar to those described by Mugica et al (2010aMugica et al ( ) during 2005Mugica et al ( -2006, but three times higher than those reported by Saldarriaga et al (2008) PAH differences in space were also observed by Thornhill et al (2008), where different primary emission sources resulted in different PAH emitted concentrations in PM 10. This spatial heterogeneity implies the importance of the primary emission combustion sources in each site and implies that PAH concentrations in PM 10 in a specific site can not be extrapolated to other sites.…”

“…4 Saldarriaga et al (2008). PAH seasonal mean concentration (adjusted to standard conditions in 25°C and 1 atm) from February to April 2004 (Dry-warm season).…”

Characterization of PM2.5-bound nitrated and oxygenated PAHs in two industrial sites of South China

“…However, Pankow et al (1993) found that some PAHs had negative correlation with relative humidity and assumed that the increasing of humidity (ranged from 42% to 95%) can suppress the adsorption of gas phase organic species onto particle surfaces. Some recent studies didn't find significant correlations between PAHs and relative humidity (Saldarriaga et al, 2008;Tsapakis and Stephanou, 2007;Valle-Hernandez et al, 2010).…”