Imperial College London

DrGeoffFowler

Faculty of EngineeringDepartment of Civil and Environmental Engineering

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 5973g.fowler

 
 
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Location

 

413Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Dong:2017:10.1016/j.atmosenv.2017.06.020,
author = {Dong, S and Gonzalez, RO and Harrison, RM and Green, D and North, R and Fowler, G and Weiss, D},
doi = {10.1016/j.atmosenv.2017.06.020},
journal = {Atmospheric Environment},
pages = {88--98},
title = {Isotopic signatures suggest important contributions from recycled gasoline, road dust and non-exhaust traffic sources for copper, zinc and lead in PM10 in London, United Kingdom},
url = {http://dx.doi.org/10.1016/j.atmosenv.2017.06.020},
volume = {165},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The aim of this study was to improve our understanding of what controls the isotope composition of Cu, Zn and Pb in particulate matter (PM) in the urban environment and to develop these isotope systems as possible source tracers. To this end, isotope ratios (Cu, Zn and Pb) and trace element concentrations (Fe, Al, Cu, Zn, Sb, Ba, Pb, Cr, Ni and V) were determined in PM10 collected at two road sites with contrasting traffic densities in central London, UK, during two weeks in summer 2010, and in potential sources, including non-combustion traffic emissions (tires and brakes), road furniture (road paint, manhole cover and road tarmac surface) and road dust. Iron, Ba and Sb were used as proxies for emissions derived from brake pads, and Ni, and V for emissions derived from fossil fuel oil.The isotopic composition of Pb (expressed using 206Pb/207Pb) ranged between 1.1137 and 1.1364. The isotope ratios of Cu and Zn expressed as δ65CuNIST976 and δ66ZnLyon ranged between −0.01‰ and +0.51‰ and between −0.21‰ and +0.33‰, respectively. We did not find significant differences in the isotope signatures in PM10 over the two weeks sampling period and between the two sites, suggesting similar sources for each metal at both sites despite their different traffic densities. The stable isotope composition of Pb suggests significant contribution from road dust resuspension and from recycled leaded gasoline. The Cu and Zn isotope signatures of tires, brakes and road dust overlap with those of PM10. The correlation between the enrichments of Sb, Cu, Ba and Fe in PM10 support the previously established hypothesis that Cu isotope ratios are controlled by non-exhaust traffic emission sources in urban environments (Ochoa Gonzalez et al., 2016). Analysis of the Zn isotope signatures in PM10 and possible sources at the two sites suggests significant contribution from tire wear. However, temporary additional sources, likely high temperature in
AU - Dong,S
AU - Gonzalez,RO
AU - Harrison,RM
AU - Green,D
AU - North,R
AU - Fowler,G
AU - Weiss,D
DO - 10.1016/j.atmosenv.2017.06.020
EP - 98
PY - 2017///
SN - 1352-2310
SP - 88
TI - Isotopic signatures suggest important contributions from recycled gasoline, road dust and non-exhaust traffic sources for copper, zinc and lead in PM10 in London, United Kingdom
T2 - Atmospheric Environment
UR - http://dx.doi.org/10.1016/j.atmosenv.2017.06.020
UR - http://hdl.handle.net/10044/1/52818
VL - 165
ER -