Arsenic Bioaccessibility in a Soil Amended with Drinking-Water Treatment Residuals in the Presence of Phosphorus Fertilizer

Sarkar, Dibyendu; Quazi, Shahida; Makris, Konstantinos C.; Datta, Rupali; Khairom, A.

doi:10.1007/s00244-006-0170-8

Cited by 27 publications

(31 citation statements)

References 42 publications

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“…No significant relationship between the Pb bioaccessibility and CEC was also reported by some previous studies (Romero et al 2008;Sarkar et al 2007;Tang et al 2008). Soil OM has been showed to tightly bind Pb and played a vital role in determining Pb speciation in soils (Newton et al 2006;Pinheiro et al 1999).…”

Section: Factors In Controlling the Bioaccessibility Of Pb And Assupporting

confidence: 56%

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Lead (Pb) and arsenic (As) bioaccessibility in various soils from south China

Cui

Chen

2010

Environ Monit Assess

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Seventeen soil samples with various concentrations of lead (Pb) and arsenic (As) were collected from five provinces of south China, and bioaccessibility of Pb and As in the soils were examined using a physiologically based extraction test. The results showed that the bioaccessibility ranged from 24.6% to 82.5% and 2.3% to 57.5% for Pb, 2.5% to 65.5% and 1.2% to 31.8% for As in the gastric and small intestinal phases, respectively. The effect of soil properties on the bioaccessible of Pb/As was evaluated. Path analysis showed that coefficients of determination (R (2)) for the bioaccessible Pb were 0.93 in the both gastric and small intestinal phases and for the bioaccessible As were 0.98 and 0.99 in the gastric and small intestinal phases, respectively. Among all the soil characteristics, OM, DCBFe, CEC, and WAs were significant for controlling PbD, and CEC, CaCl(2)-Pb, and WAs were important for controlling PbI. Partitioning by path analysis also showed significant direct effects by CaCl(2)-Pb and WAs on AsD, and OM, CEC, CaCl(2)-Pb, and WAs on AsI.

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Section: Factors In Controlling the Bioaccessibility Of Pb And Assupporting

confidence: 56%

“…Another type is soil properties, such as soil pH, soil texture, soil organic matter (OM), Fe, and Mn oxides, etc. (Girouard and Zagury 2009;Sarkar et al 2007;Yang et al 2002). For example, soil pH is a main parameter determining the bioaccessibility, and bioaccessibility of Pb and As decreases with increasing pH.…”

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confidence: 99%

Lead (Pb) and arsenic (As) bioaccessibility in various soils from south China

Cui

Chen

2010

Environ Monit Assess

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“…In the present study, the CMP is the most effective among the three phosphate amendments used to reduce the bioaccessibility of Pb. Sarkar et al (2007) found that the bioaccessibility of soil As in the human stomach was not influenced by the presence or absence of phosphate after considerable equilibration time (12 months). In the present study, the bioaccessibility of soil As did not change except for a small decrease for the treatment of CMP with the addition of phosphate in gastric and small intestinal phase.…”

Section: Bioaccessibility Of As and Pb In Soilmentioning

confidence: 96%

“…Oral bioaccessibility test, which is a measure of solubility of heavy metal in the gastrointestinal compartment, is applicable to the soil ingestion pathway (Beak et al 2006;Ruby et al 1996). The bioaccessibility of metal has also been used to evaluate the effectiveness of heavy metal remediation in soils (Bosso et al 2008;Sarkar et al 2007). Bosso's (2008) study showed that the most efficient phosphate source was NaH 2 PO 4 , which reduced Pb solubility by 92% in acidic gastric conditions after the first month.…”

Section: Introductionmentioning

confidence: 99%

Assessment of In Situ Immobilization of Lead (Pb) and Arsenic (As) in Contaminated Soils with Phosphate and Iron: Solubility and Bioaccessibility

Cui

Weng

et al. 2010

Water Air Soil Pollut

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The effect of in situ immobilization of lead (Pb) and arsenic (As) in soil with respectively phosphate and iron is well recognized. However, studies on combined Pb and As-contaminated soil are fewer, and assessment of the effectiveness of the immobilization on mobility and bioaccessibility is also necessary. In this study, a Pb and As-contaminated soil was collected from an abandoned lead/zinc mine in Shaoxing, Zhejiang province of China, which has been treated with three phosphates, i.e., calcium magnesium phosphate (CMP), phosphate rock, and single super-phosphate (SSP) for 6 months in a field study. The ferrous sulfate (FeSO 4 ) at 20 g kg −1 was then amended to the soil samples and incubated for 8 weeks in a greenhouse. The solubility and bioaccessibility tests were used to assess the effectiveness of the in situ immobilization. The result showed that phosphates addition decreased the concentrations of CaCl 2 -extractable Pb; however, the concentrations of water-soluble As increased upon CMP and SSP addition. With the iron addition, the water-soluble As concentrations decreased significantly, but CaCl 2 -extractable Pb concentrations increased. The bioaccessibility of As and Pb measured in artificial gastric and small intestinal solutions decreased with phosphate and iron application except for the bioaccessibility of As in the gastric phase with SSP addition. Combined application of phosphates and iron can be an effective approach to lower bioaccessibility of As and Pb, but has opposing effects on mobility of As and Pb in contaminated soils.

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“…The key contaminants included in this work are arsenic (As), lead (Pb) and cadmium (Cd) as they are potentially harmful to human health (ATSDR, 2007b;ATSDR, 2007a;ATSDR, 2008) and the most common elements undergoing bioaccessibility research Ruby et al, 1993;Ruby et al, 1996;Albores et al, 2000;Oomen et al, 2002;Marschner et al, 2006;Chan et al, 2007;Datta et al, 2007;Drexler and Brattin, 2007;Finzgar et al, 2007;Hansen et al, 2007;Juhasz et al, 2007aJuhasz et al, , 2007bLjung et al, 2007;Sarkar et al, 2007;Subacz et al, 2007;Turner and Ip, 2007;Van de Wiele et al, 2007;Beak et al, 2008;Moseley et al, 2008;Girouard and Zagury, 2009;Morman et al, 2009;Nagar et al, 2009;Poggio et al, 2009;Smith et al, 2009;Zhang et al, 2009;Demetriades et al, 2010;Juhasz et al2010). …”

Section: Introductionmentioning

confidence: 99%

An inter-laboratory trial of the unified BARGE bioaccessibility method for arsenic, cadmium and lead in soil

Wragg

Cave

Basta

et al. 2011

Science of The Total Environment

166

225

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The Bioaccessibility Research Group of Europe (BARGE) has carried out an interlaboratory trial of a proposed harmonised in vitro physiologically based ingestion bioaccessibility procedure for soils, called the Unified BARGE Method (UBM). The UBM includes an initial saliva phase and simulated stomach and intestine compartments. The trial involved the participation of seven laboratories (five European and two North American) providing bioaccessibility data for As (11 samples), Cd (9 samples) and Pb (13 samples) using soils with in vivo relative bioavailability data measured using a swine model. The results of the study were compared with benchmark criteria for assessing the suitability of the UBM to provide data for human health risk assessments. Mine waste and slag soils containing high concentrations of As caused problems of poor repeatability and reproducibility which were alleviated when the samples were run at lower soil to solution ratios. The study showed that the UBM met the benchmark criteria for both the stomach and stomach & intestine phase for As. For Cd, three out of four criteria were met for the stomach phase but only one for the stomach & intestine phase. For Pb two, out of four criteria were met for the stomach phase and none for the stomach & intestine phase. However, the study recommends tighter control of pH in the stomach phase extraction to improve between-laboratory variability, more reproducible in vivo validation data and that a follow up inter-laboratory trial should be carried out.

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Arsenic Bioaccessibility in a Soil Amended with Drinking-Water Treatment Residuals in the Presence of Phosphorus Fertilizer

Cited by 27 publications

References 42 publications

Lead (Pb) and arsenic (As) bioaccessibility in various soils from south China

Lead (Pb) and arsenic (As) bioaccessibility in various soils from south China

Assessment of In Situ Immobilization of Lead (Pb) and Arsenic (As) in Contaminated Soils with Phosphate and Iron: Solubility and Bioaccessibility

An inter-laboratory trial of the unified BARGE bioaccessibility method for arsenic, cadmium and lead in soil

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