Variations in vanadium, nickel and lanthanoid element concentrations in urban air.
The emission of trace metal pollutants by industry and transport takes place on a scale large enough to alter atmospheric chemistry and results in measurable differences between the urban background of inhalable particulate matter (PM) in different towns. This is particularly well demonstrated by the technogenic release into the atmosphere of V, Ni, and lanthanoid elements. We compare PM concentrations of these metals in large datasets from five industrial towns in Spain variously influenced by emissions from refinery, power station, shipping, stainless steel, ceramic tiles and brick-making. Increased La/Ce values in urban background inhalable PM, due to La-contamination from refineries and their residual products (fuel oils and petcoke), contrast with Ce-rich emissions from the ceramic related industry, and clearly demonstrate the value of this ratio as a sensitive and reliable tracer for many point source emissions. Similarly, anomalously high V/Ni values (>4) can detect the influence of nearby high-V petcoke and fuel oil combustion, although the use of this ratio in urban background PM is limited by overlapping values in natural and anthropogenic materials. Geochemical characterisation of urban background PM is a valuable compliment to the physical monitoring of aerosols widely employed in urban areas, especially given the relevance of trace metal inhalation to urban health issues.
Moreno
Teresa
T
Institute of Environmental Assessment and Water Research, IDAEA, CSIC, C/ Jordi Girona 18, 08034 Barcelona, Spain. teresa.moreno@idaea.csic.es
Querol
Xavier
X
Alastuey
Andrés
A
de la Rosa
Jesús
J
Sánchez de la Campa
Ana María
AM
Minguillón
Maricruz
M
Pandolfi
Marco
M
González-Castanedo
Yolanda
Y
Monfort
Eliseo
E
Gibbons
Wes
W
D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data; D001272:Atmosphere / Q000737:chemistry*; D002947:Cities; D004784:Environmental Monitoring; D028581:Lanthanoid Series Elements / Q000032:analysis*; D009532:Nickel / Q000032:analysis*; D010316:Particle Size; D014639:Vanadium / Q000032:analysis*
D000393:Air Pollutants; D028581:Lanthanoid Series Elements; D014639:Vanadium; D009532:Nickel