Emission factors from road dust resuspension in a Mediterranean freeway

Abstract Particulate matter emissions from paved roads are currently one of the main challenges for a sustainable transport in Europe. Emissions are scarcely estimated due to the lack of knowledge about the resuspension process severely hampering a reliable simulation of PM and heavy metals concentrations in large cities and evaluation of population exposure. In this study the Emission Factors from road dust resuspension on a Mediterranean freeway were estimated per single vehicle category and PM component (OC, EC, mineral dust and metals) by means of the deployment of vertical profiles of passive samplers and terminal concentration estimate. The estimated PM10 emission factors varied from 12 to 47 mg VKT−1 (VKT: Vehicle Kilometer Traveled) with an average value of 22.7 ± 14.2 mg VKT−1. Emission Factors for heavy and light duty vehicles, passenger cars and motorbikes were estimated, based on average fleet composition and EPA ratios, in 187–733 mg VKT−1, 33–131 VKT−1, 9.4–36.9 VKT−1 and 0.8–3.3 VKT−1, respectively. These range of values are lower than previous estimates in Mediterranean urban roads, probably due to the lower dust reservoir on freeways. PM emitted material was dominated by mineral dust (9–10 mg VKT−1), but also OC and EC were found to be major components and approximately 14–25% and 2–9% of average PM exhaust emissions from diesel passenger cars on highways respectively.

[1]  Akula Venkatram,et al.  A critique of empirical emission factor models: a case study of the AP-42 model for estimating PM10 emissions from paved roads , 2000 .

[2]  M. Viana,et al.  Partitioning of major and trace components in PM10–PM2.5–PM1 at an urban site in Southern Europe , 2008 .

[3]  Hélène Cachier,et al.  Characterisation of fresh particulate vehicular exhausts near a Paris high flow road , 2001 .

[4]  M. Grottker.  Runoff quality from a street with medium traffic loading , 1988 .

[5]  David Leith,et al.  Passive Aerosol Sampler. Part I: Principle of Operation , 2001 .

[6]  X. Querol,et al.  Sources and variability of inhalable road dust particles in three European cities , 2011 .

[7]  Hugo Denier van der Gon,et al.  Effect of rain events on the mobility of road dust load in two Dutch and Spanish roads , 2012 .

[8]  Fulvio Amato,et al.  The Effects of Particulate Matter Sources on Daily Mortality: A Case-Crossover Study of Barcelona, Spain , 2011, Environmental health perspectives.

[9]  J. Schauer,et al.  Emissions of metals associated with motor vehicle roadways. , 2005, Environmental science & technology.

[10]  Kaarle Kupiainen,et al.  Experimental studies about the impact of traction sand on urban road dust composition. , 2003, The Science of the total environment.

[11]  John A. Gillies,et al.  Vehicle-based road dust emission measurement (III):: effect of speed, traffic volume, location, and season on PM10 road dust emissions in the Treasure Valley, ID , 2003 .

[12]  Roy M. Harrison,et al.  Estimation of particle resuspension source strength on a major London Road , 2007 .

[13]  P. Giess,et al.  The effects of vehicle activity on particle resuspension , 1989 .

[14]  David E. Barnes,et al.  Very Fine and Ultrafine Metals and Ischemic Heart Disease in the California Central Valley 2: 1974–1991 , 2011 .

[15]  Gerald Falkenberg,et al.  Real-world emission factors for antimony and other brake wear related trace elements: size-segregated values for light and heavy duty vehicles. , 2009, Environmental science & technology.

[16]  Hirokazu Kimura,et al.  Particle size and composition distribution analysis of automotive brake abrasion dusts for the evaluation of antimony sources of airborne particulate matter , 2007 .

[17]  Mar Viana,et al.  Spatial and chemical patterns of PM10 in road dust deposited in urban environment , 2009 .

[18]  Roy M. Harrison,et al.  Identification of brake wear particles and derivation of a quantitative tracer for brake dust at a major road , 2010 .

[19]  X. Querol,et al.  Simple estimates of vehicle-induced resuspension rates. , 2011, Journal of environmental management.

[20]  John R. Stedman,et al.  New Directions: Why are PM10 concentrations in Europe not falling?☆ , 2008 .

[21]  William M. Alley,et al.  Estimation of accumulation parameters for urban runoff quality modeling , 1981 .

[22]  A. Venkatram.  Response to comments by Nicholson. A critique of empirical emission factor models: a case study of the AP-42 model for estimating PM10 emission from paved roads (Atmospheric Environment 34, 1–11) , 2001 .

[23]  K. W. Nicholson,et al.  Factors affecting resuspension by road traffic , 1990 .

[24]  David E. Barnes,et al.  Very Fine and Ultrafine Metals and Ischemic Heart Disease in the California Central Valley 1: 2003–2007 , 2011 .

[25]  Mats Gustafsson,et al.  Properties and toxicological effects of particles from the interaction between tyres, road pavement and winter traction material. , 2008, The Science of the total environment.

[26]  Ernest Weingartner,et al.  Separate determination of PM10 emission factors of road traffic for tailpipe emissions and emissions from abrasion and resuspension processes , 2004 .

[27]  J. Orza,et al.  Simple passive methods for the assessment of the directional and vertical distributions of wind-blown particulates , 2009 .

[28]  S. Pye,et al.  UK Emissions of Air Pollutants 1970 to 2001 , 2003 .

[29]  Monica Pandolfi,et al.  Quantifying road dust resuspension in urban environment by Multilinear Engine: A comparison with PMF2 , 2009 .

[30]  Christer Johansson,et al.  Road traffic emission factors for heavy metals , 2009 .

[31]  Matthias Ketzel,et al.  Estimation and validation of PM2.5/PM10 exhaust and non-exhaust emission factors for practical street pollution modelling , 2007 .

[32]  Ranjeet S. Sokhi,et al.  Road traffic impact on urban atmospheric aerosol loading at Oporto, Portugal , 2010 .

[33]  J M Baldasano,et al.  A comprehensive assessment of PM emissions from paved roads: real-world Emission Factors and intense street cleaning trials. , 2010, The Science of the total environment.

[34]  K. W. Nicholson.  A critique of empirical emission factor models: a case study of the AP-42 model for estimating PM10 emissions from paved roads (Venkatram, A., Atmospheric Environment 34, 1–11) , 2001 .

[35]  H. Furumai,et al.  SOURCE APPORTIONMENT OF POLYCYCLIC AROMATIC HYDROCARBONS IN ROAD DUST IN TOKYO , 2004 .

[36]  R. Harrison,et al.  Use of surrogate surfaces for dry deposition measurements , 1990 .

[37]  I. Marr,et al.  Size and composition of particulate emissions from motor vehicles in the Kaisermühlen-Tunnel, Vienna , 2008 .

[38]  Xavier Querol,et al.  Monitoring of PM10 and PM2.5 around primary particulate anthropogenic emission sources , 2001 .

[39]  P. A. Sheppard,et al.  Atmospheric Diffusion , 1962, Nature.

[40]  Åke Sjödin,et al.  Metal emissions from road traffic and the influence of resuspension: results from two tunnel studies , 2002 .