Particle size distribution and characteristics of heavy metals in road-deposited sediments from Beijing Olympic Park

Li, Haiyan; Shi, Anbang; Zhang, Xiaoran

doi:10.1016/j.jes.2014.11.014

Cited by 101 publications

(34 citation statements)

References 58 publications

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“…Based on the results of previous section, foliar dusts had a smaller particle size than road dusts. Thus, the concentration of heavy metals was inversely proportional to the particle size, for the smaller particle size had a larger specific area and could absorb more substance, as previous studies had shown [11, 25, 33, 34]. However, the contents of Fe and Mn were nearly independent with particle size in 50% of the samples.…”

Section: Resultsmentioning

confidence: 69%

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Tracing Sources and Contamination Assessments of Heavy Metals in Road and Foliar Dusts in a Typical Mining City, China

et al. 2016

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Road and foliar dust samples from four land-use districts of Panzhihua City, a famous V-Ti magnetite production area of China, were collected to investigate the sources and distribution characteristics of 9 heavy metals (V, Pb, Cd, Cu, Zn, Ni, Cr, Fe, and Mn). The results suggest that foliar samples had smaller particle size and higher heavy metal contents than road dusts. The contamination assessments of heavy metals were as follows: Pb and V (significant enrichment) > Zn, Ni, Cr, Fe, and Mn (moderate enrichment) > Cd and Ni (minimal enrichment). Statistical analyses showed Pb, as the primary pollution element, originated from waste incineration and lead-fuel combustion. The sources of Zn, Ni, Cr, Fe, V, and Mn were fugitive dust and traffic activities. Potential origins of Cu were corrosion of alloys used in vehicle components, vehicle covers, or other metallic surfaces and materials. The sources of Cd were different from any other heavy metals. Traffic and industrial activities were the main anthropogenic origins of heavy metals in dusts of Panzhihua, and more attention should be paid to heavy metal pollution in agricultural area.

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Section: Resultsmentioning

confidence: 69%

“…A few metals (Cu, Zn, Fe and Mn) have little effect on humans, while others (Pb, Cd, and Cr)have serious effects even at low concentrations [10]. During rain/storm/street-washing events, dust particles laden with contaminants are washed off and finally end up in receiving water bodies[11, 12]. …”

Section: Introductionmentioning

confidence: 99%

Tracing Sources and Contamination Assessments of Heavy Metals in Road and Foliar Dusts in a Typical Mining City, China

et al. 2016

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“…Each milled dust sample was pressed into a 32-mm diameter pellet with boric acid binding for element content determination using x-ray fluorescence spectrometry (XRF). A PANalytical PW2403 XRF apparatus was used in the study to measure the content of the harmful metals Co, Cr, Pb, Cu, Zn, Ni, Mn, and V in finer than 100 μm roadway dust samples from various functional areas of Xi'an [28], owing to these heavy metals being frequently reported to accumulate in urban dust [11][12][28][29][30][31][32] and the contents of these heavy metals in finer road dusts being generally high [23][24][25][26]. The quality control of the experiment was conducted using duplicated samples and standard samples during the measurement [12,32].…”

Section: Background Of Study Areamentioning

confidence: 99%

“…that conclusion mainly through urban roadway dust bulk samples, whereas differently sized dusts have distinct transport modes and diverse environmental effects [8,23]. Under the traffic stream, pedestrian flow, and wind, dust particles finer than 100 μm are more easily re-suspended into the atmosphere [24][25], which makes the particle able to be inhaled and adhere more, and be transported long-distances compared to dust particles bigger than 100 μm.…”

mentioning

confidence: 99%

Evaluating Health Hazards of Harmful Metals in Roadway Dust Particles Finer than 100 μm

Shi¹,

Lu²,

Wang³

2018

Pol. J. Environ. Stud.

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“…Besides, different metals are often primarily bound to different components of sediment. For example, Cu is widely reported to favorably associate with organic matters [21], while Zn is primarily bound to carbonates and oxides [22]. Consequently, the extent and rate of metal detachment will be controlled by the selective attack of sediment components when the washing agents were added.…”

Section: Introductionmentioning

confidence: 99%

Metal removal and associated binding fraction transformation in contaminated river sediment washed by different types of agents

et al. 2017

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In ex-situ washing, HCl, EDTA and H2O2 solutions can effectively extract heavy metals in river sediment. Nevertheless they often target different sediment components, possibly transforming metal species into more bioavailable and hence toxic ones. This study, in batch settings, investigated the influences of different types of washing agents (i.e. HCl, EDTA and H2O2) on metal (i.e. Cu and Zn) removal from contaminated river sediment, destroy or dissolution of sediment components, and transformation of metal fractions during chemical washing treatment. Additionally, bioavailability of these metals left in the washed sediment was assessed. Results showed that HCl obtained the highest Cu and Zn removal through destroying the reducible, oxidizable and residual sediment components. Meanwhile, it transformed metal fractions to acid extractable one, resulting in an increase in metal bioavailability. Thus, the feasibility of washing with HCl for sediment remediation shall be reconsidered due to the caused high metal bioavailability. EDTA was capable of removing metals via direct complexation of labile metal species and indirect dissolution of reducible and oxidizable sediment components, where the transformation of corresponding metal binding fraction may occur. H2O2 obtained the lowest total Cu and Zn removal, but it preferentially removed the oxidizable metal species by oxidizing sulfides in the sediment. The bioavailable levels of Cu and Zn in the sediment washed by EDTA or H2O2 seemed not increase. To maintain a good balance between labile metal species removal and avoiding increase of metal bioavailability, EDTA and H2O2 are promising additives for metal removal by sediment washing.

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Particle size distribution and characteristics of heavy metals in road-deposited sediments from Beijing Olympic Park

Cited by 101 publications

References 58 publications

Tracing Sources and Contamination Assessments of Heavy Metals in Road and Foliar Dusts in a Typical Mining City, China

Tracing Sources and Contamination Assessments of Heavy Metals in Road and Foliar Dusts in a Typical Mining City, China

Evaluating Health Hazards of Harmful Metals in Roadway Dust Particles Finer than 100 μm

Metal removal and associated binding fraction transformation in contaminated river sediment washed by different types of agents

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