Traffic tracers in a suburban location in northern Spain: relationship between carbonaceous fraction and metals

Environmental Science and Pollution Research International
L MegidoB Suárez-Peña

Abstract

PM10 and black smoke were monitored at a suburban sampling station located in the northern Spanish city of Gijón. Thirty-two metals and total carbon (TC) (i.e., organic carbon (OC) and elemental carbon (EC)) were analyzed over a year. The study of air-mass origin based on 5-day back trajectories was carried out to assess its influence on the recovery data. Different strategies were implemented to infer the influence of traffic in the area. On average, TC accounted for 29 % of the PM10 fraction, with OC forming 77 % of this TC. The influence of traffic was clearly reduced during intense Atlantic advection episodes, when OC and EC decreased up to 0.39 and 0.22 μg C/m(3), respectively. In contrast, the highest values were reported during regional episodes, exceeding 10 μg C/m(3) of OC and 2 μg C/m(3) of EC. The correlation between EC and OC was found to notably improve when considering the days with high traffic flow (from R (2) = 0.46 to R (2) = 0.74). This pattern was also reproduced by black smoke and EC (from R (2) = 0.49 to R (2) = 0.59). Cu and Sn were found to be reliable traffic tracers given their high dependence on EC (R (2) = 0.82 and R (2) = 0.79, respectively). Nevertheless, Sn, Ba, and Sb showed a better correlation ...Continue Reading

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Citations

Oct 19, 2016·Environmental Science and Pollution Research International·Laura MegidoElena Marañón
Apr 20, 2019·Environmental Science and Pollution Research International·Jiyoung ImChungsoo Lee
Dec 16, 2018·Environmental Geochemistry and Health·Saeed Motesaddi ZarandiYadolah Fakhri
Jan 10, 2021·The Science of the Total Environment·Amelia PiscitelloRajandrea Sethi
Dec 23, 2016·Journal of Environmental Management·L MegidoE Marañón

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Software Mentioned

NIOSH
IMPROVE
HYSPLIT
EUSAAR2

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