The effect of EURO-0 vehicle substitution on polycyclic aromatic hydrocarbon and carbon monoxide concentrations in an urban area

Federico Valerio, Anna Stella, Mauro Pala, Daniele Balducci, Maria Teresa Piccardo, Massimo Cipolla

Research output: Contribution to journalArticle

Abstract

From 1994 to 2003, daily air concentrations of particle-bound polycyclic aromatic hydrocarbons (PAHs) and carbon monoxide (CO) were regularly monitored at two traffic-oriented sampling sites (A and B) in urban Genoa, Italy. The data were used to estimate effects on air quality in real situations due to progressive substitution of EURO-0 vehicles, started in 1993, with less-polluting vehicles (EURO-1, EURO-2), mainly gasoline vehicles with a catalyst. PAH profile classification and diagnostic PAH ratios were used to identify 345 samples of predominantly traffic origin. At both sites, CO and PAH daily concentrations decreased exponentially with time and the apparent half-life values calculated were 6.3 and 5.5 for CO and 3.7 and 3.5 years for PAHs at sites A and B, respectively. At site A, monitored for traffic intensity, multiple regression analyses confirmed that daily PAH and CO concentrations were positively correlated with the number of non-catalytic vehicles estimated to cross this site during sampling and negatively correlated with seasonal variables (air temperature, ozone concentration, relative air humidity). The reduction in air pollution estimated for complete substitution of non-catalytic gasoline vehicles was 89% for BaP, 85% for total PAHs and 69% for CO.

Original languageEnglish
Pages (from-to)1520-1526
Number of pages7
JournalAtmospheric Environment
Volume43
Issue number8
DOIs
Publication statusPublished - Mar 2009

Keywords

  • Air pollution
  • Catalytic converter
  • Emission sources
  • Temporal trend
  • Urban traffic

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)

Fingerprint Dive into the research topics of 'The effect of EURO-0 vehicle substitution on polycyclic aromatic hydrocarbon and carbon monoxide concentrations in an urban area'. Together they form a unique fingerprint.

  • Cite this