Arsenic: An Environmental Problem Limited by Solubility

Clara, Manfred; Magalhães, Fabiano

doi:10.1002/chin.200313209

Cited by 33 publications

(50 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The release of As from CaHAsO 4 is possible in an aerobic environment when CO 2 reacts with CaHAsO 4 , causing CaHAsO 4 to become unstable while CaCO 3 remains stable (Caille et al 2003;Magalhaes 2002). Krishnamurti and Naidu (2007) confirmed that when sediment pH exceeds 8, specific trace metals (Cu, Zn, and Cd) can be soluble.…”

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 73%

“…Sediment found in many arid climates have a similar pH, as described above, including the Three Kids Mine, which ranges between 7.8 and 8.15. This high pH may possibly induce mobility of As and Pb, as described by Krishnamurti and Naidu (2007) and Magalhaes (2002). Other studies by Caille et al (2003) and Wong et al (1999) have also shown that some metalloids and trace metals are soluble in an aerobic environment where pH [ 8.0.…”

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 86%

“…Another possibility as to why As initially increased followed by a decrease is that the sediments at the Three Kids Mine are comprised of crushed igneous rocks containing little organic matter. Studies have shown that metalloid (AsO 4 3-, AsO 3 3-, and Se) mobility is controlled by both nutrient and organic matter availability (Haque et al 2008(Haque et al , 2007Magalhaes 2002;Tye et al 2002). The sediment composition at the Three Kids Mine may have induced metalloid mobility.…”

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 96%

“…With regards to pH, studies have shown that complexes of metalloids like calcium-arsenate (CaHAsO 4 ) can be reduced to CaCO 3 , releasing As, at a pH [ 8 (Magalhaes 2002;Winter and Dillon 2005). The release of As from CaHAsO 4 is possible in an aerobic environment when CO 2 reacts with CaHAsO 4 , causing CaHAsO 4 to become unstable while CaCO 3 remains stable (Caille et al 2003;Magalhaes 2002).…”

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 99%

See 3 more Smart Citations

Risk of Metal Mobilization from Redevelopment Activities in Hyperarid Climates: A Laboratory Experiment and Discussion

Sims

Keller

2014

Mine Water Environ

View full text Add to dashboard Cite

The reclamation and redevelopment of abandoned mine sites into parks, golf courses, and residential communities in arid and hyperarid regions has been caused, in part, to rising land costs. A laboratory experiment using three columns was monitored for 273 days to evaluate trace metal and metalloid availability. The sediment from the Three Kids Mine that was used in this study is documented to contain high levels of trace metals and metalloids. The experiment simulated agricultural activities over time to assess whether fertilizers would mobilize trapped contaminants. Results indicate that irrigation and fertilizers can provide conditions for Pb, Mn, Zn, Al, Ba, Cu, and As to become mobile, though on a limited basis. There was an increase in Pb, Mn, Zn, Al, Ba, Cu, and As within the first 30 days followed by a decrease at 90 days. Concentrations of Pb, Mn, and Zn increased at 273 days due to application of fertilizer-fortified waters. This study shows the potential for mobilized trace metals and metalloids to enter the wider environment after developmental activities are finished.

show abstract

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 73%

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 86%

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 96%

Section: Aluminum Arsenic Barium and Coppermentioning

confidence: 99%

See 2 more Smart Citations

Risk of Metal Mobilization from Redevelopment Activities in Hyperarid Climates: A Laboratory Experiment and Discussion

Sims

Keller

2014

Mine Water Environ

View full text Add to dashboard Cite

show abstract

“…Based on a sequential extraction developed for As and scanning electron microscopy/X-ray spectrophotometry results, the significance of Ca for As retention is suggested to be negligible even in calcareous soils, since As is primarily bound to Fe oxides [181,182]. Even if Ca-As compounds are formed in soil, dissolved As concentration in soil solution in equilibrium with calcium arsenates in the pH range of 4.5-8.5 might be too high to mitigate ecotoxicological risks [183].…”

Section: Liming Compoundsmentioning

confidence: 99%

Trace Element Immobilization in Soil Using Amendments

Kumpienė

2010

Trace Elements in Soils

View full text Add to dashboard Cite

Evaluation of metals, metalloids, and ash mixture toxicity using sediment toxicity testing

Stojak

Bonnevie

Jones

2014

Integr Envir Assess & Manag

View full text Add to dashboard Cite

In December 2008, a release of 4.1 million m3 of coal ash from the Tennessee Valley Authority Kingston Fossil Plant occurred. Ash washed into the Emory River and migrated downstream into the Clinch and Tennessee Rivers. A Baseline Ecological Risk Assessment evaluated risks to ecological receptors from ash in the river system post‐dredging. This article describes the approach used and results from sediment toxicity tests, discussing any causal relationships between ash, metals, and toxicity. Literature is limited in the realm of aquatic coal combustion residue (CCR) exposures and the potential magnitude of effects on benthic invertebrates. Sediment samples along a spectrum of ash content were used in a tiered toxicity testing approach and included a combination of 10 day sediment toxicity acute tests and longer‐term, partial life cycle “definitive” tests with 2 species (Hyalella azteca and Chironomus dilutus). Arsenic, and to a lesser extent Se, in the ash was the most likely toxicant causing observed effects in the laboratory toxicity tests. Sites in the Emory River with the greatest statistical and biologically significant effects had As concentrations in sediments twice the probable effects concentration of 33 mg/kg. These sites contained greater than 50% ash. Sites with less than approximately 50% ash in sediments exhibited fewer significant toxic responses relative to the reference sediment in the laboratory. The results discussed here present useful evidence of only limited effects occurring from a worst‐case exposure pathway. These results provided a valuable line of evidence for the overall assessment of risks to benthic invertebrates and to other ecological receptors, and were crucial to risk management and development of project remediation goals. Integr Environ Assess Manag 2015;11:21–31. © 2014 SETAC

show abstract

Arsenic: An Environmental Problem Limited by Solubility

Abstract: For Abstract see ChemInform Abstract in Full Text.

Cited by 33 publications

References 1 publication

Risk of Metal Mobilization from Redevelopment Activities in Hyperarid Climates: A Laboratory Experiment and Discussion

Risk of Metal Mobilization from Redevelopment Activities in Hyperarid Climates: A Laboratory Experiment and Discussion

Trace Element Immobilization in Soil Using Amendments

Evaluation of metals, metalloids, and ash mixture toxicity using sediment toxicity testing

Contact Info

Product

Resources

About