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525007 
Journal Article 
Particulate matter, gas-phase and particle-bound polycyclic aromatic hydrocarbons in an urban environment heavily impacted by vehicular traffic (Bologna, Italy) 
Stracquadanio, M; Trombini, C 
2006 
Yes 
Annali di Chimica
ISSN: 0003-4592
EISSN: 1612-8877 
96 
7-8 
463-478 
English 
16948435 
WOS:000239943500009 
A set of 8 polycyclic aromatic hydrocarbons (PAHs) has been analysed in a traffic-limited area in Bologna downtown, both in the gas-phase and in the particulate phase (PM10), and gas-to-particle partitioning has been investigated. From Sep 2002 to May 2003, 28 high volume PM10 samplings were carried out, and in 50% of the samplings, PM10 concentrations exceeded the limit of 50 mu g/m(3) established by a 1999 EU directive. A precisely defined sampling strategy was adopted to limit artifacts (8 h sampling in the same time interval) in the 28 samplings carried out in different meteorological conditions. A linear log-log correlation was found between gas-particle partitioning coefficients KBP and the subcooled liquid vapour pressures pB(L)(0)(B), with rP(2P) = 0.82 and slope = -0.59. This empirical correlation may be used to anticipate the total (gas + particle-bound) concentration of each PAHs in this urban site, once PM10 and the particle-bound concentration is measured. Parallel samplings of PM10 and of PM2.5 allowed us to ascertain that PM2.5 represents the gross contribution to PM10 and that most of the particle-bound PAHs reside on the finest fraction of particulate matter. 
semivolatile organic-compounds; ambient-temperature; carbon; measurements; relative-humidity; adjacent coastal; diesel exhaust; black carbon; n-alkanes; pahs; atmosphere 
NAAQS
• ISA-NOx (2016)
     Considered
          Health Effects