Effect of an organic amendment on availability and bio-accessibility of some metals in soils of urban recreational areas

Fernández, María del Carmen Florido; Díaz, Fernando Madrid; Madrid, L.

doi:10.1016/j.envpol.2010.11.002

Cited by 14 publications

(11 citation statements)

References 18 publications

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“…Compared with the garden soil, the CSS had a much higher OM content. The obvious reduction in the pH can be attributed to the hydrolysis of CSS-originated OM caused by acid-producing bacteria producing organic acid during the incubation period [ 7 , 19 ]. On the contrary, there was a significant increasing trend in the EC, CEC, and OM content of the soil with CSS addition rate.…”

Section: Resultsmentioning

confidence: 99%

“…It has been suggested that using SS as a fertiliser in landscaping can avoid the potential transmission of heavy metals in SS through the food chain [ 11 ]. However, it should be noted that in playgrounds and other recreational areas, the incidental ingestion of soil via hand-to-mouth activity is a very likely way of transferring metals from SS-amended garden soils to humans, especially children [ 19 , 20 ]. To date, there has been limited work on the oral bioaccessibility of heavy metals in SS and SS-amended soils, which indicates metal toxicity in humans.…”

Section: Introductionmentioning

confidence: 99%

“…Tongesayi et al [ 20 ] reported that the practice of amending soils with regulated biosolids can present a real human health danger due to the accumulation of metals and the impact this will have on the speciation, mobility, and bioaccessibility of metals in the soil. Florido et al [ 19 ] demonstrated that the addition of biosolids should be done only after making sure that the heavy metals present in the material are not likely to cause significant increases in the soil contents of these elements, especially the available and bioaccessible fractions. Moreover, research into the bioavailability of metals in biosolids applied to land has been suggested by the Environment Protection Authority of Victoria, Australia, to produce a more realistic estimation for risks associated with biosolids use in the current Victorian state guideline for biosolids land application [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Fractionation, Bioaccessibility, and Risk Assessment of Heavy Metals in the Soil of an Urban Recreational Area Amended with Composted Sewage Sludge

Yang

Zhang

Shao

et al. 2018

IJERPH

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A composted sewage sludge (CSS) was added to the soil of an urban garden at 5%, 10%, and 25% (w/w soil) and stabilised for 180 days. Samples were then collected and analysed for total heavy metal concentrations, chemical fractions, and bioaccessibility, together with some physicochemical properties. The results showed that the total chromium (Cr), copper (Cu), lead (Pb), and zinc (Zn) concentrations were increased with CSS addition rate. The CSS addition decreased the residual fractions of these four elements. The exchangeable Cr, Cu, and Pb fractions were very small or not detected, while Zn exhibited an increasing trend in its exchangeable fraction with CSS addition rate. The bioaccessibility of these four elements was increased with the CSS addition rate. Moreover, the Cr, Cu, and Zn bioaccessibility correlated positively with the total concentration, while the bioaccessibility of these four elements exhibited a negative correlation with the residual fraction. The fractionation and bioaccessibility of heavy metals may have also been influenced by pH, cation exchange capacity, and organic matter. The risk assessment code reflected the amended soil showed no or low environmental risks for Cr, Cu, and Pb and a medium risk for Zn. The hazardous index values and cancer risk levels indicated that the heavy metals in the soil amended with 25% CSS posed negligible potential noncarcinogenic and carcinogenic risks to children and adults via incidental ingestion.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fractionation, Bioaccessibility, and Risk Assessment of Heavy Metals in the Soil of an Urban Recreational Area Amended with Composted Sewage Sludge

Yang

Zhang

Shao

et al. 2018

IJERPH

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“…Significant increase in total Cd, Cu, Pb and Zn concentrations in topsoil has been found after amendment of sludge for seven years (Ben Achiba et al, 2010;Egiarte et al, 2009) so that the risks posed by recycling of sludge to soil need to be further and cautiously assessed. Trace metal (Cu, Pb, Zn) concentration limits have found to be exceeded in soil receiving a certain amounts of sludge for one year (Florido et al, 2011). Alcantara et al (2009) found that amendment of sludge lasting five years increased the Cr, Cu, Ni and Zn concentrations in soil but that the final metal concentrations were unlikely to cause environmental pollution risk.…”

Section: Effects Of Sludge Amendment On Heavy Metal Concentrations Inmentioning

confidence: 99%

Achilles heel of environmental risk from recycling of sludge to soil as amendment: A summary in recent ten years (2007–2016)

Liu

2016

Waste Management

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a b s t r a c tRecycling sludge as a soil amendment has both positive and negative effects because of its enrichment in both nutrients and contaminants. So far, the negative effect has to be extensively investigated that the severities of different types of contaminants also remain unclear. The environmental behavior and risk of organic contaminant and pharmaceuticals, heavy metal and salt as well as pathogenic microorganisms brought by sludge amendment are summarized and discussed here. Organic contaminants and pharmaceuticals are typically found at low concentrations in sludge, the risks from sludge-amended soil decrease over time owing to its biodegradability. On the other hand, application of sludge generally increases soil salinity, which may cause physiological damage to plants grown in sludge-amended soil. In some extent, this negative effect can be alleviated by means of dilution; however, greater attention should be paid to long term increasing possible risk of eutrophication. Heavy metal (particularly of mobile heavy metals, such as Cd) with high concentrations in sludge and soil receiving considerable sludge can cause its incremental abundance in soil and crop contamination, further posing risks to humans, but most cases showed that there remained not excessive in heavy metal caused by sludge amendment. It is worth noting that increasing soil organic matter content may reduce transfer of heavy metal from soil to crops, but not restrict its uptake by crops at all. Combined literature together, it is summarized that heavy metal becomes a relatively severe bottleneck in recycling of sludge as soil amendment due to its nonbiodegradability and potential damage to health by adventuring contamination from agricultural products. Particular attention should therefore be paid to long term monitoring the change of heavy metals concentration in sludge amended soil.

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“…The results of Munksgaard and Lottermoser's () work represented that with the application of fresh organic material of Pinus radiate and phosphatic fertilizer from different sources boosted the mobility and bioavailability of toxic metals when applied to soils contaminated with mining activities. Findings of various other researchers revealed that with the addition of domestic and industrial biowastes and biosolids to agricultural soils significantly increases the total and bioavailable fraction of toxic elements (Florido, Madrid, & Madrid, ; Jamali et al, ).…”

Section: Resultsmentioning

confidence: 99%

Investigating the uptake and acquisition of potentially toxic elements in plants and health risks associated with the addition of fresh biowaste amendments to industrially contaminated soil

et al. 2017

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Soil contamination by potentially toxic elements (PTEs), due to rapid industrialization and urbanization, is a serious environmental concern that has been threatening both the sustainability of various agroecosystems and human health. Efforts to investigate the bioavailability, transfer, and accumulation of PTEs in the soil–plant system and their possible health consequences have almost exclusively focused in the past studies. However, there is limited evidence for increased human exposure to PTEs through dietary intake of food crop grown on contaminated soil influenced by fresh biowaste amendments (FBAs). Here, we show that FBAs addition to soil markedly (p ≤ .01) intensified human exposure to PTEs through impacts on solubility, uptake, and bioaccumulation compared with the control. In general, the risk assessment performed indicated that the hazard index values for FBAs treatments were notably higher than that of control; however, these were shown to be less than the legal limit (<1). In addition, the lifetime risks of developing carcinogenicity from exposure to PTEs were far above the maximum regulatory limits (1.00E‐06), indicating that remarkable (p ≤ .01) amount of PTEs was transferred to food with the addition of FBAs. Conclusively, these results suggest that the use of FBAs to contaminated soil aggravates health risks of PTEs through wheat consumption. Further studies, which incorporate the in vitro gastrointestinal bioaccessibility, should be conducted to heighten our understanding about PTEs exposure and the risks associated with FBAs addition to contaminated soil.

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Effect of an organic amendment on availability and bio-accessibility of some metals in soils of urban recreational areas

Cited by 14 publications

References 18 publications

Fractionation, Bioaccessibility, and Risk Assessment of Heavy Metals in the Soil of an Urban Recreational Area Amended with Composted Sewage Sludge

Fractionation, Bioaccessibility, and Risk Assessment of Heavy Metals in the Soil of an Urban Recreational Area Amended with Composted Sewage Sludge

Achilles heel of environmental risk from recycling of sludge to soil as amendment: A summary in recent ten years (2007–2016)

Investigating the uptake and acquisition of potentially toxic elements in plants and health risks associated with the addition of fresh biowaste amendments to industrially contaminated soil

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