Vertical distribution and speciation of heavy metals in stormwater infiltration facilities: possible heavy metals release to groundwater

2007 ◽  
Vol 2 (2) ◽  
Author(s):  
R. K. Aryal ◽  
H. Furumai ◽  
F. Nakajima ◽  
M. A. Hossain
Keyword(s):  
Heavy Metals ◽  
Road Dust ◽  
Residual Fraction ◽  
Future Possibility ◽  
The Road ◽  
Speciation Study ◽  
Metal Contents ◽  
Exchangeable Fraction ◽  
Stormwater Infiltration ◽  
Underlying Soil

The infiltration inlet facilities on the side of the road along with the sewage system have been constructed two decades ago in highly urbanized residential area in Tokyo. Possible release of heavy metals from the infiltration inlet was studied by analyzing sediment samples in different vertical depth. Seven heavy metals (Cr, Mn, Co, Ni, Cu, Zn and Pb) were measured. The heavy metal contents in sediment decreased with depth. The low content of heavy metals at the bottom sediment compared to the top indicated possible release of heavy metals from the inlet sediment. The heavy metals speciation study showed that the order of the extractability/mobility in the sediment in acid exchangeable fraction was Zn and Mn>Co>Ni>Cu >Cr and Pb. The mobility order in road dust also followed the similar pattern. In reducible fraction (metal oxide bound) Pb was the most mobile in the sediment while the other metals mobility order was not similar. In oxidizable fraction (organic and sulfide bound) the order was different for the sediment and road dusts. The residual fraction contained 18 to 83% heavy metals. The presence of heavy metals in acid exchangeable, reducible and oxidizable fractions indicated a future possibility of their release to the underlying soil and the groundwater.

Anthropogenic magnetic particles and heavy metals in the road dust: Magnetic identification and its implications

2010 ◽  
Vol 44 (9) ◽  
pp. 1175-1185 ◽  
Author(s):  
Tao Yang ◽  
Qingsheng Liu ◽  
Haixia Li ◽  
Qingli Zeng ◽  
Lungsang Chan
Keyword(s):  
Heavy Metals ◽  
Magnetic Particles ◽  
Road Dust ◽  
The Road

Heavy metals in road dust, gully pots and parkland soils in a highly urbanised sub-catchment of Port Jackson, Australia

Soil Research ◽  
2003 ◽  
Vol 41 (7) ◽  
pp. 1329 ◽  
Author(s):  
G. F. Birch ◽  
A. Scollen
Keyword(s):  
Heavy Metals ◽  
Spatial Information ◽  
Fine Fraction ◽  
Source Area ◽  
Road Dust ◽  
Traffic Volume ◽  
Road Surface ◽  
Metal Concentrations ◽  
The Road ◽  
Temporal Study

The current temporal and spatial investigation was undertaken to determine the nature and concentration of heavy metals in road dust and to assess whether road dust was a possible source of metals to adjacent soils and gully pots.Three roads were selected in the Iron Cove catchment, Sydney Harbour, to investigate the influence of traffic volume on the heavy metal concentrations and accumulations rates with time. The mass of road dust increased irregularly with time since the last cleaning event and metal concentrations increased with traffic volume, but concentrations did not increase with antecedent time, possible due to variable particle size distributions. The mass of material accumulating on 1 m2 of road surface over 5 days was 72.5, 41.7, and 4.8 g for high (Parramatta Road), medium (Marion Street), and low (National Street) traffic volume roads, respectively. The source area of road surface for the test sites (200–400 m of road) may provide, over the 5-day test period, maximum loads of (g): Cr 2, Cu 7, Ni 2, Pb 29, and Zn 28 for Marion Street; Cr 0.1, Cu 0.3, Ni 0.1, Pb 2, and Zn 3 for National Street; and Cr 2, Cu 8, Ni 1, Pb 26, and Zn 18 for Parramatta Road. To provide better spatial information than the 3 samples sites used in the temporal study, road dust (n = 171) and gully pot (n = 23) samples where taken across the entire Iron Cove catchment. Mean concentrations of road dust were 6, 34, 164, 28 000, 284, 27, 487, and 523 μg/g for Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn, respectively, for all road types, and concentrations in gully pot material were 7, 20, 112, 24 000, 316, 20, 199, and 257 μg/g, respectively. A large proportion of these metals is associated with the mobile, fine fraction (<62.5 μm), and the majority (54–100%) of these elements are extracted with weak leaching agents (EDTA and 1 M hydrochloric acid). However, more information on speciation is required to determine bioavailability. SEM/EDAX analysis suggests that metals in the fine fraction may be adsorbed, whereas particulate metal and inclusion phases are common in the coarser (62.5–125 μm) material.Metal concentrations in parkland soils adjacent to the roads are highly enriched and increase with traffic volume. Concentrations decline markedly with distance from roads, but maximum values are at 30–50 m from the road edge, due to high-velocity wind generated by vehicles in proximity to the road. Metal-rich soils and gully pot deposits may be available for transport to the adjacent stormwater system.

Heavy metals speciation in soakaways sediment and evaluation of metal retention properties of surrounding soil

2007 ◽  
Vol 56 (11) ◽  
pp. 81-89 ◽  
Author(s):  
M.A. Hossain ◽  
H. Furumai ◽  
F. Nakajima ◽  
R.K. Aryal
Keyword(s):  
Heavy Metals ◽  
Surface Soil ◽  
Speciation Analysis ◽  
Core Sample ◽  
Significant Heterogeneity ◽  
Soil Core ◽  
Metal Retention ◽  
Adsorption Sites ◽  
Stormwater Infiltration ◽  
Underlying Soil

Heavy metals speciation analysis was carried out on sediment samples accumulated within soakaways in an old stormwater infiltration facility in Tokyo, Japan and on a soil core sample collected near the facility. Heavy metals content in soakaways sediments were much elevated compared to nearby surface soil with the content for Zn, Pb and Cd reaching about 5 to 10 times the content in surface soil. Speciation results revealed that significant amount of the accumulated heavy metals were present in potential mobile fractions, posing threat of release to underlying soil with changing environmental conditions. Detail analyses of soil characteristics indicated significant heterogeneity with depth, especially between the surface soil and underlying soil at site. Decrease in potential adsorption sites with depth was observed in case of underlying soil. Reduced adsorption capacity for heavy metals was evidenced for underlying soil when compared with surface soil. Furthermore, less capability of the soil organic matter to bind heavy metals was evidenced through speciation analyses, which raises concern over the long-term pollution retention potential of the underlying soil receiving infiltrated runoff.

Evaluating the mobile heavy metal pool in soakaway sediment, road dust and soil through sequential extraction and isotopic exchange

2010 ◽  
Vol 62 (4) ◽  
pp. 920-928 ◽  
Author(s):  
Manish Kumar ◽  
Hiroaki Furumai ◽  
Futoshi Kurisu ◽  
Ikuro Kasuga
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sequential Extraction ◽  
Isotopic Exchange ◽  
Road Dust ◽  
Weak Acid ◽  
Isotopic Dilution ◽  
Contamination Level ◽  
Isotopic Tracers ◽  
Exchangeable Fraction

Selective sequential dissolution (SSD) and isotopic dilution are two most commonly applied techniques for the measurement of mobile fraction of heavy metal present in the urban environment. This work examined the compliance between SSD proposed by the Community Bureau of Reference (BCR) and isotopic dilution technique (IDT) for determination of mobile pool of heavy metal contained in soakaway sediment, road dust, and soil sample. Heavy metals (Cu, Zn, Cd and Pb) were fractionated using the three-stage BCR protocol, while isotopically exchangeable metal concentrations (E-value) were investigated through isotopic tracers (111Cd, 65Cu, 207Pb and 66Zn). In general, total contamination level, E-value and BCR exchangeable fractions of different samples followed the similar order of road dust &gt; soakaway sediment &gt; soil. Results revealed that the E-value exceeded the BCR exchangeable fraction in all samples. In addition, the first three fractions of BCR which have potential to become mobile under certain environmental conditions were collectively termed as “potential mobile pool” and compared with E-value. It was concluded that metal extracted by weak acid underestimates the exchangeable fraction while the potential mobile pool extracted by three reagents overestimates the real mobile forms of heavy metals. However, better mobility characteristics of heavy metals can be assessed by coupling information obtained through sequential extraction and isotopic exchange.

scholarly journals Chemical Speciation and Potential Mobility of some Metals of Selected Farmland in Kogi State, North Central Nigeria

2021 ◽  
Vol 28 (1) ◽  
pp. 48-55
Author(s):  
J.E. Emurotu
Keyword(s):  
Heavy Metals ◽  
Agricultural Soils ◽  
Metal Speciation ◽  
Residual Fraction ◽  
Food Crops ◽  
Residual Soil ◽  
North Central ◽  
Mn Oxide ◽  
Exchangeable Fraction ◽  
Potential Mobility

The contamination of agricultural soils with heavy metals is of concern because if the soil is contaminated, the metals can be transferred to food crops. The availability of these metals to food crops depends on the forms in which they are present in the soils. In this study, sequential extraction technique was applied to assess the exchangeable, carbonate-bound, Fe-Mn oxide bound, organic bound and residual fractions in the topsoil of farmlands in Kogi State, North Central Nigeria. Proportions in non-residual soil phases were 82.6 % Cd, 48.6 % Co, 72.5 % Cu, 73.2 % Ni, 41.9 % Pb, and 84.3 % Zn. Lead (Pb) and cobalt (Co) showed the highest phase of 58.1% and 51.4 %, respectively in the residual phase. The low concentration of lead in the non-residual fraction (41.9 %) and the highly mobileexchangeable phase and pH sensitive carbonate phase is an indication that there is no increase in anthropogenic input of Pb into the environment. Cadmium, zinc and nickel are most abundant in exchangeable fraction and this can be of concern especially cadmium. Keywords: Heavy metals, Metal speciation, Farmlands, Food crops, Metal uptake

scholarly journals Influence of Highway Traffic on Contamination of Roadside Soil with Heavy Metals

2021 ◽  
Vol 7 (8) ◽  
pp. 1459-1471
Author(s):  
Benabid Abderrahmane ◽  
Benmbarek Naima ◽  
Mansouri Tarek ◽  
Merdas Abdelghani
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Enrichment Factor ◽  
Heavy Metal Contamination ◽  
Road Traffic ◽  
Road Dust ◽  
Climatic Conditions ◽  
Highway Traffic ◽  
The Road ◽  
Accumulation Index

This study is one of the first works which examined the assessment of heavy metal contamination of pavement-side soils in Algeria. It deals with the section of National Highway 3 (RN3), which crosses the wilaya of Batna. In the environment of sampling sites there is no industry or dangerous activity on the environment, the heavy metals addressed in this study are (Pb, Cu, Cr, Fe, Ni, Zn), their origin being road traffic. The objectives of this study were to: (1) Determine the concentrations of heavy metals in road dust; (2) Identify the sources of different heavy metals in soils and road dust; (3) Exploring the extent of heavy metal pollution in neighbouring soils. To this end, 33 samples were collected, including 03 road dust and 30 soil samples over different distances from 1m to 80m. The samples were analyzed by FRX. Results indicated that concentrations in road dust were higher than in soil. The distribution of heavy metal concentrations in dust is Fe>Pb>Zn>Cu>Cr>Ni, and the distribution in the ground is Fe>Pb>Cu>Zn>Cr>Ni in the direction of Biskra and in the opposite direction and decreases away from the road, while the distribution in the central solid ground is Fe> Cu>Cr>Pb>Zn>Ni. Climatic conditions such as wind, rainfall, temperature, humidity and the nature of the terrain were also significantly related to their enrichment in these roadside soils. The enrichment factor (EF) and the geo-accumulation index (Igeo) were calculated, as well as all elements with a (EF) that ranges from moderate to high to extremely contaminated, reflecting the high anthropogenic load of these metals in the study area and the results of the Igéo accumulation indices confirm the results obtained for the enrichment factor (EF). Doi: 10.28991/cej-2021-03091736 Full Text: PDF

scholarly journals Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea)

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Rim Ben Amor ◽  
Asma Yahyaoui ◽  
Myriam Abidi ◽  
Lasaad Chouba ◽  
Moncef Gueddari
Keyword(s):  
Heavy Metals ◽  
Mediterranean Sea ◽  
Surface Sediments ◽  
Total Concentration ◽  
Anthropogenic Sources ◽  
Residual Fraction ◽  
Gulf Of Tunis ◽  
Exchangeable Fraction ◽  
Geochemical Indices ◽  
Low Toxicity

The total concentration and the speciation of heavy metals (Pb, Cd, Cu, Zn, Ni, and Cr) in surface sediments of Rades-Hamam Lif coast were determined, with particular focus on the effect that urban and industrial waste in the Meliane river has on the estuary and coastal surface sediments of the Rades-Hamam Lif coast, off the Mediterranean Sea. Several geochemical indices were applied to assess the risk of contamination and the environmental risks of heavy metals on surface sediments. The total concentrations of these heavy metals are influenced by runoff, industrial, and urban wastewater. The Cd, Pb, Zn, and Ni are affected by anthropogenic sources, especially at the mouth of the Meliane river. The sequential extraction of Cd was presented dominantly in the exchangeable fraction and thus the high potential bioavailability. In contrast, Cr and Cu were mostly bound to the residual fraction indicating their low toxicity and bioavailability. The order of migration and transformation sequence was Cd > Pb > Ni > Zn > Cr > Cu, and the degree of pollution was Cd > Pb > Ni > Zn > Cr > Cu.

scholarly journals A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

2019 ◽  
Vol 9 (4) ◽  
pp. 670 ◽  
Author(s):  
Xiaoran Zhang ◽  
Shimin Guo ◽  
Junfeng Liu ◽  
Ziyang Zhang ◽  
Kaihong Song ◽  
...  
Keyword(s):  
Residence Time ◽  
Removal Rate ◽  
Low Cost ◽  
Column Experiment ◽  
Residual Fraction ◽  
Maximum Adsorption Capacity ◽  
Copper Adsorption ◽  
Exchangeable Fraction ◽  
Pseudo Second Order ◽  
Stormwater Infiltration

Heavy metals such as Cu(II), if ubiquitous in the runoff, can have adverse effects on the environment and human health. Lime sand bricks, as low-cost adsorbents to be potentially applied in stormwater infiltration facilities, were systematically investigated for Cu(II) removal from water using batch and column experiments. In the batch experiment, the adsorption of Cu(II) to bricks reach an equilibrium within 7 h and the kinetic data fits well with the pseudo-second-order model. The sorption isotherm can be described by both the Freundlich and Langmuir model and the maximum adsorption capacity of the bricks is 7 ± 1 mg/g. In the column experiment, the best removal efficiency for Cu(II) was observed at a filler thickness of 20 cm, service time of 12 min with a Cu(II) concentration of 0.5 mg/L. The Cu(II) removal rate increases with the increasing bed depth and residence time. The inlet concentration and residence time had significant effects on the Cu(II) removal analyzed by the Box–Behnken design (BBD). The Adams-Bohart model was in good agreement with the experimental data in representing the breakthrough curve. Copper fractions in the bricks descend in the order of organic matter fraction > Fe-Mn oxides fraction > carbonates fraction > residual fraction > exchangeable fraction, indicating that the lime sand bricks after copper adsorption reduce the long-term ecotoxicity and bioavailability to the environment.

Enrichment, inter-relationship, and fractionation of heavy metals in road-deposited sediments of Sydney, Australia

Soil Research ◽  
2012 ◽  
Vol 50 (3) ◽  
pp. 229 ◽  
Author(s):  
Thamer Mohammed ◽  
Paripurnanda Loganathan ◽  
Andrew Kinsela ◽  
Saravanamuthu Vigneswaran ◽  
Jayakumar Kandasamy
Keyword(s):  
Heavy Metals ◽  
Road Traffic ◽  
Pollution Index ◽  
Residual Fraction ◽  
Traffic Density ◽  
Exchangeable Fraction ◽  
Total Concentrations ◽  
Tyre Wear ◽  
Cu And Zn ◽  
Sydney Australia

Urban road-deposited sediments (RDS) are potential sources of heavy metal pollution of both terrestrial and aquatic environments. We determined the heavy metals enrichments, their possible sources, and potential bioavailability and mobility in RDS from nine sites along major motorways of Sydney, the largest city with highest road traffic density in Australia. Mean total concentrations of metals in the RDS decreased in the order: Fe > Mn > Zn > Cu > Cr > Pb > Ni > Cd. The corresponding order in the background soils (minimally contaminated from roads) was: Fe > Mn > Zn ~ Ni > Cu ~ Pb > Cr > Cd. Both the pollution index (PI) and metal enrichment factor (EF), which are comparative measures between contaminated and uncontaminated sites, were highest for Cu and Zn. Inputs of Cu and Zn to RDS were likely to be mainly the result of brake and tyre wear, respectively. Cluster and correlation analyses showed that while the concentrations of these two metals were related in the soil, they were not correlated in RDS. Low PI and EF values as well as the close inter-relationships of Fe, Mn, Cr, and Ni in both RDS and soils suggest that these metals were derived mainly from natural sources. Metal fractionation data showed 50–95% of Cr and Fe in RDS to be present in the immobile and bio-unavailable residual fraction, whereas 15–65% of Zn was contained in the exchangeable fraction, which is considered to be mobile and bioavailable.

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