Pollution Buildup on Road Surfaces

Deletić, Ana; Orr, David W.

doi:10.1061/(asce)0733-9372(2005)131:1(49)

Cited by 153 publications

(72 citation statements)

References 12 publications

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“…The results above implied that consideration of particle grain size helped better understand metal risk. In addition, the RDS grain size had an important influence on the mobility of particles and their associated pollutant concentrations (Roger et al, 1998;Murakami et al, 2005;Deletic and Orr, 2009). The amount was another critical factor affecting RDS potential pollutants contribution to water.…”

Section: Discussionmentioning

confidence: 99%

“…Road surfaces serve as sinks and sources of metals and other contaminants in urban environments (Deletic and Orr, 2009;Yuen et al, 2012). Elevated concentrations of metals are ubiquitous in road-deposited sediment (RDS) owing to a wide range of human activities including vehicle emissions, coal combustion, disintegration of vehicle brakes and tires, atmospheric deposition, road surface wear, municipal solid waste incineration, and residential heating (Andrews and Sutherland, 2004;Duzgoren-Aydin, 2007;Eriksson et al, 2007;Duong and Lee, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Risk assessment of metals in road-deposited sediment along an urban–rural gradient

Zhao

2013

Environmental Pollution

107

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a b s t r a c tWe applied the traditional risk assessment methods originally designed for soils and river sediments to evaluation of risk associated with metals in road-deposited sediment (RDS) along an urbanerural gradient that included central urban (UCA), urban village (UVA), central suburban county (CSA), rural town (RTA), and rural village (RVA) areas in the Beijing metropolitan region. A new indicator RI RDS was developed which integrated the RDS characteristics of mobility, grain size and amount with the potential ecological risk index. The risk associated with metals in RDS in urban areas was generally higher than that in rural areas based on the assessment using traditional methods, but the risk was higher in urban and rural village areas than the areas with higher administration units based on the indicator RI RDS . These findings implied that RDS characteristics variation with the urbanerural gradient must be considered in metal risk assessment and RDS washoff pollution control.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Risk assessment of metals in road-deposited sediment along an urban–rural gradient

Zhao

2013

Environmental Pollution

107

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“…It has been shown in many previous studies that the RDS particle grain size distribution has an important relationship with the RDS characteristics because it affects the amount of RDS present, the concentrations and speciation of the associated metals, and the mobility of the RDS (Sutherland, 2003;Deletic and Orr, 2005;Lau and Stenstrom, 2005;Zhao et al, 2010). The particle grain size distribution affects the source and transport factors in the RDS index model.…”

Section: 2mentioning

confidence: 99%

Index models to evaluate the potential metal pollution contribution from washoff of road-deposited sediment

Zhao

Zhao²,

Yin

et al. 2014

Water Research

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“…The grain size distribution of RDS is a particularly important factor because it determines the mobility of the particles and their associated pollutant concentrations [8][9][10]. The behavior of RDS in runoff depends on its grain size distribution [11,12].…”

Section: Introductionmentioning

confidence: 99%

Grain size distribution of road-deposited sediment and its contribution to heavy metal pollution in urban runoff in Beijing, China

Zhao

Wang

et al. 2010

Journal of Hazardous Materials

243

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a b s t r a c tPollutant washoff from road-deposited sediment (RDS) is an increasing problem associated with the rapid urbanization of China that results in urban non-point source pollution. Here, we analyzed the RDS grain size distribution and its potential impact on heavy metal pollution in urban runoff from impervious surfaces of urban villages, colleges and residences, and main traffic roads in the Haidian District, Beijing, China. RDS with smaller grain size had a higher metal concentration. Specifically, particles with the smallest grain size (<44 m) had the highest metal concentration in most areas (unit: mg/kg): Cd 0.28-1.31, Cr 57.9-154, Cu 68.1-142, Ni 25.8-78.0, Pb 73.1-222 and Zn 264-664. Particles with smaller grain size (<250 m) contributed more than 80% of the total metal loads in RDS washoff, while suspended solids with a grain size <44 m in runoff water accounted for greater than 70% of the metal mass in the total suspended solids (TSS). The heavy metal content in the TSS was 2.21-6.52% of that in the RDS. These findings will facilitate our understanding of the importance of RDS grain size distribution in heavy metal pollution caused by urban storm runoff.

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Pollution Buildup on Road Surfaces

Cited by 153 publications

References 12 publications

Risk assessment of metals in road-deposited sediment along an urban–rural gradient

Risk assessment of metals in road-deposited sediment along an urban–rural gradient

Index models to evaluate the potential metal pollution contribution from washoff of road-deposited sediment

Grain size distribution of road-deposited sediment and its contribution to heavy metal pollution in urban runoff in Beijing, China

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