Partitioning and granulometric distribution of metal leachate from urban traffic dry deposition particulate matter subject to acidic rainfall and runoff retention

Sansalone, John J.; Guo, Ying

doi:10.1016/j.watres.2008.06.013

Cited by 59 publications

(29 citation statements)

References 29 publications

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“…For RDS and washoff particles, particles with a particle size <105 m contributed 20-30% and 50-90% of the heavy metal loads including the four chemical fractions (acid-extractable, reducible, oxidizable, and residual), respectively. The above results were basically consistent with those of a previous study conducted by Sansalone and Ying (2008) that the finer particles generates the highest metal concentrations and the highest metal mass is associated with the coarser fraction [34]. The RDS and washoff particles with particle size <105 m in UCA and UVA showed the largest and lowest GSF Load values in the four chemical fractions, respectively, based on the particle size composition and pollutant distribution associated with them.…”

Section: Impacts Of Particle Sizes On Metal Contamination In Rds and supporting

confidence: 91%

“…Previous studies suggested that RDS and washoff particles had either an exponential, rating curve, or other relationship depending on a range of parameters such as surface characteristics, rainfall intensity and duration, RDS particle sizes, land use, etc. [7,9,[33][34][35][36][37]. However, it was unclear how particle size composition influenced the relationship of pollutants between RDS and washoff particles [38].…”

Section: Discussionmentioning

confidence: 99%

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Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall

Zhao

2013

Journal of Hazardous Materials

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h i g h l i g h t sHeavy metal concentrations in washoff particles increased by 10-30% compared with RDS. Rainfall intensity and duration did not affect increased rate of metal concentrations. Grain size of RDS and washoff particles carrying most heavy metals was different. Metal concentrations in RDS washoff decreased along the urban-rural gradient. Understanding the relationship between heavy metals in road-deposited sediments (RDS) and washoff particles is essential to controlling urban runoff pollution. RDS and its associated heavy metals were investigated along the urban-suburban-rural gradient around Beijing, China. RDS washoff and its associated metal contaminants in different particle size fractions were evaluated using simulated rainfall. The results showed that the washoff percentage of RDS decreased along the urban-rural gradient. The Cu, Zn, Ni, Cr and Pb contents in washoff particles were 28.1%, 20.0%, 19.7%, 11.6%, and 11.4% higher than those in RDS, respectively. Additionally, different metals showed increases in different chemical fractions. RDS particles <105 m accounted for 40% of the total mass in RDS, but 50%, 70% and 75% of the total metal content in RDS, washoff particle mass and washoff particle metal content, respectively. Rainfall intensity and duration affected the amount of metals in washoff, but did not lead to an increase in the percentage of metals with different chemical fractions in washoff particles. The findings presented herein will facilitate development of strategies for control of urban diffuse pollution from RDS.

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Section: Impacts Of Particle Sizes On Metal Contamination In Rds and supporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall

Zhao

2013

Journal of Hazardous Materials

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“…Prolonged or frequent exposure of urban soil and particulate matter deposited on soil surface to acid rains cause leaching (dissolution and mobilization) of trace metals from non-silicate matrices (Sansalone and Ying 2008). Eh-pH diagrams (Brookins 1988;NIAIST 2005) for all investigated metals show that acid conditions (pH \ 5) and aerated environments are favorable for soluble forms of investigated metals, but as soon as pH approaches neutral value or becomes slightly alkaline all metals tend to precipitate and consequently become insoluble.…”

Section: Zincmentioning

confidence: 97%

Distribution and availability of potentially toxic metals in soil in central area of Belgrade, Serbia

et al. 2009

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Belgrade, capital city of Serbia, has over 1,600,000 inhabitants and over 400,000 vehicles trafficking every day on its streets. The investigation of soil pollution was performed by sequential extraction analysis to investigate the availability of potentially toxic metals (Zn, Cd, Pb, Co, Ni, Cu, Cr and Mn) under different oxidation and pH conditions. All investigated metals were mainly extracted from soils with neutral or acidic extractants. Serious pollution was observed along roads and streets with high traffic frequency, but Pb and Ni pollution was the highest since their concentrations exceed both soil Serbian standard and Canadian guidance values and is characteristic for all investigated sites. Cd, Cu, Cr and Zn concentrations are moderately high since they are between Canadian guideline and Serbian standard.

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“…2004 ;Hallberg et al . 2007 ;Sansalone & Ying 2008 ) have applied the partition coeffi cient of these contaminants in the design of urban water treatment processes. However, pollutants are not just adsorbed to particulate surfaces, but they can be chemically linked by adsorption, co -precipitation, formation of organometallic co -ordination complexes, and incorporation into the attempting to apply partitioning to urban sediments, however, another problem is that the environment is rarely stable.…”

Section: Transport Of P Articulate -A Ssociated P Ollutants In U Rbanmentioning

confidence: 99%

Urban Aquatic Sediments

Poleto

Charlesworth

Laurenti

2010

Sedimentology of Aqueous Systems

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Partitioning and granulometric distribution of metal leachate from urban traffic dry deposition particulate matter subject to acidic rainfall and runoff retention

Cited by 59 publications

References 29 publications

Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall

Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall

Distribution and availability of potentially toxic metals in soil in central area of Belgrade, Serbia

Urban Aquatic Sediments

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