Urban environmental geochemistry of trace metals

Wong, Coby Sze-chung; Li, Xiangzhong; Thornton, I.

doi:10.1016/j.envpol.2005.09.004

Cited by 546 publications

(262 citation statements)

References 136 publications

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“…In urban environments, the anthropogenic sources of trace metals include primarily atmospheric inputs from industrial activities, waste incineration, and car use as well as solid inputs such as construction wastes (Alloway 2012;Wong et al 2006). In contrast with agricultural soils, urban soils are characterized by the spatial heterogeneity of contamination (Alloway 2012;Meuser 2010), which complicates remediation strategies.…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation of urban soils contaminated with trace metals using Noccaea caerulescens: comparing non-metallicolous populations to the metallicolous ‘Ganges’ in field trials

Jacobs

Drouet

Sterckeman

et al. 2017

Environ Sci Pollut Res

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Urban soil contamination with trace metals is a major obstacle to the development of urban agriculture as crops grown in urban gardens are prone to accumulate trace metals up to toxic levels for human consumption. Phytoextraction is considered as a potentially cost-effective alternative to conventional methods such as excavation. Field trials of phytoextraction with Noccaea caerulescens were conducted on urban soils contaminated with Cd, Cu, Pb, and Zn (respectively around 2, 150-200, 400-500, and 400-700 μg g −1 of dry soil). Metallicolous (Ganges population) and non-metallicolous (NMET) populations were compared for biomass production and trace metal uptake. Moreover, we tested the effect of compost and fertilizer addition. Maximal biomass of 5 t ha −1 was obtained with NMET populations on some plots. Compared to Ganges-the high Cd-accumulating ecotype from South of France often used in phytoextraction trials-NMET populations have an advantage for biomass production and for Zn accumulation, with an average Zn uptake of 2.5 times higher. The addition of compost seems detrimental due to metal immobilization in the soil with little or no effect on plant growth.In addition to differences between populations, variations of growth and metal accumulation were mostly explained by soil Cd and Zn concentrations and texture. Our field trials confirm the potential of using N. caerulescens for both Cd and Zn remediation of moderately contaminated soils-with uptake values of up to 200 g Cd ha −1 and 47 kg Zn ha −1 -and show the interest of selecting the adequate population according to the targeted metal.

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Section: Introductionmentioning

confidence: 99%

Phytoremediation of urban soils contaminated with trace metals using Noccaea caerulescens: comparing non-metallicolous populations to the metallicolous ‘Ganges’ in field trials

Jacobs

Drouet

Sterckeman

et al. 2017

Environ Sci Pollut Res

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“…4 The cluster dendrogram of the five sites based on a Fac_1 and Fac_2; b the relative bioaccessibilities (R-Bio-HMs) BCR extracted forms, can be largely impacted by geographical regional factors. Among the five HMs, the site gathering was most pronounced for Cr; this is reasonable since Cr mainly come from natural sources (Manta et al 2002;Wei and Yang 2010), having no or little Bnoise^effect except in some localities with Cr-containing industries, as compared to the other four HMs, which have been usually contaminated by anthropogenic activities within and around the cities (Li et al 2001;Luo et al 2011;Wong et al 2006). The cluster analysis results were consistent with those of interactive factor loading diagram, indicating that sites from the north China, including Beijing, Datong, and Baotou, and sites from the south China, including Xiantao and Fuyang (Fig.…”

Section: Discussionmentioning

confidence: 81%

“…Introduction Thornton et al 2008;Wong et al 2006), consequently posing serious health risks to humans.…”

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confidence: 99%

Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations

Zhu

Yang

Wei

2015

Environ Sci Pollut Res

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A soil survey was conducted in urban areas from five sites, including Beijing, Baotou, Datong, Fuyang, and Xiantao in China. The objective was to explore the most significant factors that may impact the bioaccessibility of heavy metals (Bio-HMs), including As, Cr, Cu, Pb, and Zn, in soils. Twenty to 30 composite soil samples were collected at each site. The various soil properties, including pH, particle size, Fe/Mn, and organic matter contents, were analyzed. The chemical operated forms of HMs in soils were measured by the Bureau of Reference (BCR) sequential extraction scheme, while the Bio-HMs were determined by the simple bioaccessibility extraction test (SBET) procedure. The concentrations of total heavy metals (T-HMs) in soils from different sites (cities) were in the range as As (5.69-9.86), ) mg/kg. Cu and Pb had higher relative bioaccessibilities (48-70 %) than those of As and Cr (6-15 %), indicating higher health risks of the former than the latter two HMs. The Bio-HMs for various HMs were comparable to the first two or three combined BCR extracted fractions, with an exception of Cu, whose Bio-HMs were larger than the combined three BCR fractions, indicating that Cu was highly accessible in soils as compared with other HMs. Factor analysis showed that all variables, including soil property parameters and BCR extracted fractions, could be represented by three common factors extracted with higher than 0.5 loadings and ∼80 % cumulative contribution to the total variance. Among the three common factors, factor 1, containing mainly pH, texture, and Fe/Mn variables, and factor 3, containing mainly organic matter variable, could be attributed to geographical regions, while factor 2, containing mainly BCR extracted fractions, could be ascribed to relative bioaccessibility of HMs (R-Bio-HMs). Interactive mapping of the main factors and cluster analysis were consistent, which supported the Bsite gathering^of the soil sample pools, suggesting that the BioHMs in soils in different geographical localities were site dependent.

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“…Conversely, antimony extracted concentration reached 306.6 mgSb kg −1 . Other MTE showed a low extractability (in terms of quantity and ratio) whatever the sample, except Table 3 Aqua regia MTE concentrations for the 10 soil samples (mineralization according to [29] for S 7 which registered pronounced pools of Cd and Zn associated with high total concentrations. Fig.…”

Section: Chemical Extractionsmentioning

confidence: 94%

“…According to Wong et al [29], the most relevant soil layer to study the environmental and sanitary impacts of MTE in urban areas is between 0 and 25 cm. Ten top soil samples (Fig.…”

Section: Soil Sampling and Preparationmentioning

confidence: 99%

Use of ecotoxicity test and ecoscores to improve the management of polluted soils: case of a secondary lead smelter plant

Foucault

Durand

Tack

et al. 2013

Journal of Hazardous Materials

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 11346 a b s t r a c tWith the rise of sustainable development, rehabilitation of brownfield sites located in urban areas has become a major concern. Management of contaminated soils in relation with environmental and sanitary risk concerns is therefore a strong aim needing the development of both useful tools for risk assessment and sustainable remediation techniques. For soils polluted by metals and metalloids (MTE), the criteria for landfilling are currently not based on ecotoxicological tests but on total MTE concentrations and leaching tests. In this study, the ecotoxicity of leachates from MTE polluted soils sampled from an industrial site recycling lead-acid batteries were evaluated by using both modified Escherichia coli strains with luminescence modulated by metals and normalized Daphnia magna and Alivibrio fischeri bioassays. The results were clearly related to the type of microorganisms (crustacean, different strains of bacteria) whose sensitivity varied. Ecotoxicity was also different according to sample location on the site, total concentrations and physico-chemical properties of each soil. For comparison, standard leaching tests were also performed. Potentially phytoavailable fraction of MTE in soils and physico-chemical measures were finally performed in order to highlight the mechanisms. The results demonstrated that the use of a panel of microorganisms is suitable for hazard classification of polluted soils. In addition, calculated eco-scores permit to rank the polluted soils according to their potentially of dangerousness. Influence of soil and MTE characteristics on MTE mobility and ecotoxicity was also highlighted.

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Urban environmental geochemistry of trace metals

Cited by 546 publications

References 136 publications

Phytoremediation of urban soils contaminated with trace metals using Noccaea caerulescens: comparing non-metallicolous populations to the metallicolous ‘Ganges’ in field trials

Phytoremediation of urban soils contaminated with trace metals using Noccaea caerulescens: comparing non-metallicolous populations to the metallicolous ‘Ganges’ in field trials

Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations

Use of ecotoxicity test and ecoscores to improve the management of polluted soils: case of a secondary lead smelter plant

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