TY - JOUR
T1 - Source contributions to PM2.5 and PM10 at an urban background and a street location
AU - Keuken, M.
AU - Moerman, M.
AU - Voogt, M.
AU - Blom, M.
AU - Weijers, E.P.
AU - Röckmann, T.
AU - Dusek, U.
PY - 2013
Y1 - 2013
N2 - The contribution of regional, urban and traffic sources to PM2.5 and PM10 in an urban area was investigated
in this study. The chemical composition of PM2.5 and PM10 was measured over a year at a street
location and up- and down-wind of the city of Rotterdam, the Netherlands. The 14C content in EC and OC
concentrations was also determined, to distinguish the contribution from “modern” carbon (e.g., biogenic
emissions, biomass burning and wildfires) and fossil fuel combustion. It was concluded that the
urban background of PM2.5 and PM10 is dominated by the regional background, and that primary and
secondary PM emission by urban sources contribute less than 15%. The 14C analysis revealed that 70% of
OC originates from modern carbon and 30% from fossil fuel combustion. The corresponding percentages
for EC are, respectively 17% and 83%. It is concluded that in particular the urban population living in street
canyons with intense road traffic has potential health risks. This is due to exposure to elevated concentrations
of a factor two for EC from exhaust emissions in PM2.5 and a factor 2e3 for heavy metals from
brake and tyre wear, and re-suspended road dust in PM10. It follows that local air quality management
may focus on local measures to street canyons with intense road traffic.
AB - The contribution of regional, urban and traffic sources to PM2.5 and PM10 in an urban area was investigated
in this study. The chemical composition of PM2.5 and PM10 was measured over a year at a street
location and up- and down-wind of the city of Rotterdam, the Netherlands. The 14C content in EC and OC
concentrations was also determined, to distinguish the contribution from “modern” carbon (e.g., biogenic
emissions, biomass burning and wildfires) and fossil fuel combustion. It was concluded that the
urban background of PM2.5 and PM10 is dominated by the regional background, and that primary and
secondary PM emission by urban sources contribute less than 15%. The 14C analysis revealed that 70% of
OC originates from modern carbon and 30% from fossil fuel combustion. The corresponding percentages
for EC are, respectively 17% and 83%. It is concluded that in particular the urban population living in street
canyons with intense road traffic has potential health risks. This is due to exposure to elevated concentrations
of a factor two for EC from exhaust emissions in PM2.5 and a factor 2e3 for heavy metals from
brake and tyre wear, and re-suspended road dust in PM10. It follows that local air quality management
may focus on local measures to street canyons with intense road traffic.
U2 - 10.1016/j.atmosenv.2013.01.032
DO - 10.1016/j.atmosenv.2013.01.032
M3 - Article
SN - 1352-2310
VL - 71
SP - 26
EP - 35
JO - Atmospheric Environment
JF - Atmospheric Environment
ER -