Accumulation of Cr, Pb, Cu, Ni, Zn and Cd in soil following irrigation with treated urban effluent in Australia

Smith, C. J.; Hopmans, P.; Cook, F. J.

doi:10.1016/s0269-7491(96)00089-9

Cited by 150 publications

(95 citation statements)

References 8 publications

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“…As many studies have shown, municipal refuse may increase heavy metals concentrations in soils and underground water (Carlson et al, 1976;Albores et al, 2000;Okoronkwo et al, 2005a, b) which may have effects on the host soils crops and human health (Smith et al, 1996;Nyle and Ray 1999). Thus, the environmental impacts of leachates emanating from dumpsites are greatly influenced by their heavy metals contents.…”

Section: Introductionmentioning

confidence: 99%

Metals bioavailability in the leachates from dumpsites in Zaria Metropolis, Nigeria

Shallangwa¹

2013

J. Toxicol. Environ. Health Sci.

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Landfill leachates pose a significant threat to both surface water and groundwater especially the wells adjacent to landfills. The study investigated the bioavailability of zinc (Zn), copper (Cu), lead (Pb), cadmium (Cd) and mercury (Hg) from leachates of ten huge dumpsites across the metropolitan city of Zaria. The trends in the mean concentrations of the metals (mg/L) among the fractions were; Zn: total > mobile > particulate > dissolved; Pb: total > mobile > particulate > dissolved; Cd: mobile > dissolved > total > particulate; Hg: particulate > mobile > total > dissolved, respectively. All the concentrations of the metal ions were above the world Health Organization (WHO) (2006) and United States Environmental Protection Agency (USEPA) (2000) tolerable limits across the sites, with the exception of lead at the control site which was not detected. The order of the metals bioavailability was; Cd > Hg > Zn > Pb > Cu, with more than 49% found in the bioavailable phase. Thus, the underground waters within the vicinity of the dumpsites were greatly at the risk of being polluted by these toxic metals and subsequently affecting the inhabitants who use the water for drinking and other domestic activities untreated, through the food chain transfer. The health implications associated with the toxic metals include an irreversible damage to nervous system, gastric and intestinal disorder, heart disease, liver, brain damage, mental retardation and teratogenic effects.

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Section: Introductionmentioning

confidence: 99%

Metals bioavailability in the leachates from dumpsites in Zaria Metropolis, Nigeria

Shallangwa¹

2013

J. Toxicol. Environ. Health Sci.

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“…This does not adequately address the possible risks to the environment and human health posed by the thousands of potential trace organic pollutants in reclaimed wastewater although these wastewaters (whether domestic or industrial) have been treated by municipal wastewater treatment plants. Many studies have been undertaken on inorganic compounds (e.g., Klay et al, 2010;Papadopoulos et al, 2009;Rattan et al, 2005;Smith et al, 1996) and pathogens (e.g., Mutengu et al, 2007;Palese et al, 2009;Pedrero and Alarcón, 2009) in wastewater and their possible effects on soil and plants as well as human health. Some studies have investigated some persistent organic contaminants such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in wastewater irrigated soils (e.g., Al Nasir and Batarseh, 2008;Chen et al, 2005;Sun et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Distribution and accumulation of endocrine-disrupting chemicals and pharmaceuticals in wastewater irrigated soils in Hebei, China

Chen

Ying

Kong

et al. 2011

Environmental Pollution

222

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“…Subsamples of 1.00 g were weighed into 50 mL digestion tubes and mixed end over end for 2 h with 25 mL of 0.05 M Na 2 -EDTA.Then the suspensions were centrifuged at 4000× g for 20 min and filtered through 0.45 µm pore-size cellulose acetate filters before analysis [40]. The Cd concentrations in the extraction solutions were measured using ICP-MS (Agilent 7500a, Agilent Technologies Co. Ltd., Santa Clara, CA, USA).…”

Section: Determination Of Edta-extractable CDmentioning

confidence: 99%

Change of the Extractability of Cadmium Added to Different Soils: Aging Effect and Modeling

et al. 2018

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Ethylenediaminetetraacetic acid (EDTA) is known to be a chelating agent and has been widely used for estimating the total extractable metals in soil. The effect of aging on EDTA-extractable cadmium (Cd) was investigated in five different soils at three Cd concentrations incubated for 180 days. The EDTA-extractable Cd rapidly decreased after incubated during 30-60 days, followed by slow processes, and for 90 days the EDTA-extractable Cd tended to be stable. The decrease in EDTA-extractable Cd may be due to precipitation/nucleation processes, diffusion of Cd into the micropores/mesopores, and occlusion within organic matter in soils. A semi-mechanistic model to predict the extractability of Cd during incubation, based on processes of Cd precipitation/nucleation, diffusion, and occlusion within organic matter, was developed and calibrated. The results showed that the processes of micropore/mesopore diffusion were predominant processes affecting the extractability of Cd added to soils, and were slow. However, the proportions of the processes of precipitation/nucleation and occlusion within organic matter to the non-EDTA-extractable Cd added to soils were only 0.03-21.0% and 0.41-6.95%, respectively. The measured EDTA-extractable Cd from incubated soils were in good agreement with those predicted by the semi-mechanistic model (R 2 = 0.829). The results also indicated that soil pH, organic matter, and incubation time were the most important factors affecting Cd aging.

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Accumulation of Cr, Pb, Cu, Ni, Zn and Cd in soil following irrigation with treated urban effluent in Australia

Cited by 150 publications

References 8 publications

Metals bioavailability in the leachates from dumpsites in Zaria Metropolis, Nigeria

Metals bioavailability in the leachates from dumpsites in Zaria Metropolis, Nigeria

Distribution and accumulation of endocrine-disrupting chemicals and pharmaceuticals in wastewater irrigated soils in Hebei, China

Change of the Extractability of Cadmium Added to Different Soils: Aging Effect and Modeling

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