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Lin, Haw-Tarn; Wang, M. C.; Li, Gwo-Chen

doi:10.1023/a:1015534302225

Water, Air, and Soil Pollution

2002

DOI: 10.1023/a:1015534302225

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Haw-Tarn Lin

M. C. Wang

Gwo-Chen Li

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Cited by 22 publications

(1 citation statement)

References 43 publications

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“…Arsenates are bonded in the soil particularly by specific adsorption on Fe, Al and Mn oxides via ligand exchange with surface hydroxyls or aqua groups (Lin et al 2002;Manning and Goldberg 1997). Pentavalent oxyanions of arsenates and phosphates have a similar structure and chemical reactivity, reflected in the similar adsorption kinetics of the two ions (Luengo et al 2007).…”

mentioning

confidence: 99%

Effect of Low Concentrations of Phosphate Ions on Extraction of Arsenic from Naturally Contaminated Soil

Mihaljevič

Ettler

Sisr

et al. 2009

Bull Environ Contam Toxicol

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The effect of low concentrations of phosphate ions on the extraction of arsenic (As) was tested on naturally contaminated soil (As 126 mg/kg) using batch experiments. Interaction entails the extraction of low concentrations of As (5.4-23.3 microg/L As). There are statistical differences in the contents of As, Ca, Cu, Ni, Pb and nitrate in the composition of the extracts. Three types of kinetic curves document that dissolution and precipitation reactions, adsorption, desorption and biological processes participate in determining the composition of the extracts. The elevated As contents in the phosphate extracts are probably caused by competition between phosphate and arsenate ions for soil adsorption sites.

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mentioning

confidence: 99%

Effect of Low Concentrations of Phosphate Ions on Extraction of Arsenic from Naturally Contaminated Soil

Mihaljevič

Ettler

Sisr

et al. 2009

Bull Environ Contam Toxicol

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Spatial Distribution of Antimony and Arsenic Levels in Manadas Creek, an Urban Tributary of the Rio Grande in Laredo, Texas

Baeza

Ren

Krishnamurthy

et al. 2009

Arch Environ Contam Toxicol

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The Rio Grande and its tributaries represent a critical water source for both the human population and the ecological resources of the Rio Grande drainage basin. Manadas Creek, an urban tributary of the Rio Grande, is located in an industrialized area of Laredo, Texas, where warehouses, a major railroad, and a decommissioned antimony (Sb) smelter are located. Previous studies have found that the creek water is contaminated with heavy metals such as Sb and arsenic (As). However, data on the metal distribution in this creek are very limited. Herein, water and sediment core samples were collected from six sites along the creek in February, April, and May 2008. Samples were analyzed for dissolved and total metals in water, total metals in sediments, and available (soluble-exchangeable, surface adsorbed, and organically bound) fractions of metals associated with the sediments. Results show that concentrations of Sb in the water and sediment samples were significantly lower at the upstream control site compared to the two sites located near the decommissioned smelter. Decreasing levels of Sb were found at the sites located downstream. The As levels in the sediment remained constant at different depths, whereas Sb varied significantly. A high level, 420 mg/kg, of sediment Sb was found at the maximum sediment depth of 35.0 cm sampled. In addition, 65.7-76.9% Sb and 80.3-85.6% As were in their residual form, 15.0-22.5% Sb and 6.2-11.4% As were bound to organic matter, and the remaining As and Sb were in the soluble and surface adsorbed fractions. Pearson correlation analyses indicated that the distribution of Sb was only moderately correlated to iron and nickel in the sediment and its correlation with the sediment properties measured was insignificant. Cluster analyses only grouped the two Sb isotopes together for the sediments collected in May, indicating that sources other than natural occurrence were associated with Sb. The high level of sediment Sb observed indicates that the sediment bed of Manadas Creek was acting as a holding reservoir for Sb and a potential source for the Sb level in the stream water. Thus, the loss of the sediment Sb and the Sb level in the water column must be closely related to the mobility of the bed sediments and the fate of the sediment-associated Sb.

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Effect of application of phosphate and organic manure-based fertilizers on arsenic transformation in soil columns

Sisr

Mihaljevič

Ettler

et al. 2007

Environ Monit Assess

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The mobility of arsenic in Cambisol under the influence of added barnyard manure and application of a phosphate solution to the soil was described on the basis of column experiments. A soil sample containing 126 mg/kg total As and 3.72 mg/kg specifically-sorbed As was extracted using demineralized water (DIW) or a 28 micromol/l phosphate solution in a column containing untreated soil and in a column with added barnyard fertilizer. The pH, Eh, alkalinity, main components, including DOC, and selected trace elements (Al, Mn, Pb, Cu, Zn, Cd, Cr, Co, Ni, Ba and As) were determined in the extracts. Hydrodynamic tests of the flow and transport of the substances in the columns were carried out. The addition of barnyard manure was manifested in elevated concentrations of the main inorganic components, DOC and Al and a decrease in the Eh value and Mn concentration. Application of a phosphate solution was manifested in a decrease in the NO(3) and SO(4) concentrations, probably as a result of the effect of increased biological fixation. The As concentration in extracts varied from 8.8 to 15.5 microg/l and was not dependent on the composition of the extracting solution or the addition of barnyard fertilizer.

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Cited by 22 publications

References 43 publications

Effect of Low Concentrations of Phosphate Ions on Extraction of Arsenic from Naturally Contaminated Soil

Effect of Low Concentrations of Phosphate Ions on Extraction of Arsenic from Naturally Contaminated Soil

Spatial Distribution of Antimony and Arsenic Levels in Manadas Creek, an Urban Tributary of the Rio Grande in Laredo, Texas

Effect of application of phosphate and organic manure-based fertilizers on arsenic transformation in soil columns

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