Environmental fate of tungsten from military use

Clausen, Jay L.; Korte, Nic

doi:10.1016/j.scitotenv.2009.01.029

Cited by 73 publications

(71 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They reported dissolved concentration of tungsten as high as 490 mg L À1 depending on associated metal combinations as well as depletions in pH and dissolved oxygen. These results agreed with the results of Clausen and Korte (2009) who studied the leaching of tungsten from tungsten-nylon rounds at the Massachusetts Military Reservation. It is worthy to point out that dissolution traditionally refers to a physical reversible process involving no change in oxidation states; however, the release of metals from their elemental states into solutions involves a chemical process which is irreversible along the same path (Ogundipe et al, 2009).…”

supporting

confidence: 89%

See 1 more Smart Citation

Assessing tungsten transport in the vadose zone: From dissolution studies to soil columns

et al. 2012

View full text Add to dashboard Cite

a b s t r a c tThis study investigates the dissolution, sorption, leachability, and plant uptake of tungsten and alloying metals from canister round munitions in the presence of model, well characterized soils. The source of tungsten was canister round munitions, composed mainly of tungsten (95%) with iron and nickel making up the remaining fraction. Three soils were chosen for the lysimeter studies while four model soils were selected for the adsorption studies. Lysimeter soils were representatives of the typical range of soils across the continental USA; muck-peat, clay-loamy and sandy-quartzose soil. Adsorption equilibrium data on the four model soils were modeled with Langmuir and linear isotherms and the model parameters were obtained. The adsorption affinity of soils for tungsten follows the order: Pahokee peat > kaolinite > montmorillonite > illite. A canister round munition dissolution study was also performed. After 24 d, the measured dissolved concentrations were: 61.97, 3.56, 15.83 mg L À1 for tungsten, iron and nickel, respectively. Lysimeter transport studies show muck peat and sandy quartzose soils having higher tungsten concentration, up to 150 mg kg À1 in the upper layers of the lysimeters and a sharp decline with depth suggesting strong retardation processes along the soil profile. The concentrations of tungsten, iron and nickel in soil lysimeter effluents were very low in terms of posing any environmental concern; although no regulatory limits have been established for tungsten in natural waters. The substantial uptake of tungsten and nickel by ryegrass after 120 d of exposure to soils containing canister round munition suggests the possibility of tungsten and nickel entering the food chain.

show abstract

supporting

confidence: 89%

“…, respectively, and pore-water and groundwater concentrations up to 287 mg L À1 and 560 lg L À1 , respectively (Clausen et al, 2007;Clausen and Korte, 2009). A comprehensive understanding of tungsten geochemistry is needed since it determines its interactions with the soil matrix, and therefore mobility, bioavailability, and toxicity (Bednar et al, 2008).…”

mentioning

confidence: 99%

Assessing tungsten transport in the vadose zone: From dissolution studies to soil columns

et al. 2012

View full text Add to dashboard Cite

show abstract

“…This long-term exposure could increase the risk of cancer development in injured individuals. Moreover, leakage of metal solutions to drinking water and soil because of some environmental contaminants may also increase metal exposure in the general population (Clausen and Korte, 2009;Thomas et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

In vitro profiling of epigenetic modifications underlying heavy metal toxicity of tungsten-alloy and its components

Verma¹,

Xu²,

Jaiswal³

et al. 2011

Toxicology and Applied Pharmacology

View full text Add to dashboard Cite

In vitro profiling of epigenetic modifications underlying heavy metal toxicity of tungsten-alloy and its components" (2011 Tungsten-alloy has carcinogenic potential as demonstrated by cancer development in rats with intramuscular implanted tungsten-alloy pellets. This suggests a potential involvement of epigenetic events previously implicated as environmental triggers of cancer. Here, we tested metal induced cytotoxicity and epigenetic modifications including H3 acetylation, H3-Ser10 phosphorylation and H3-K4 trimethylation. We exposed human embryonic kidney (HEK293), human neuroepithelioma (SKNMC), and mouse myoblast (C2C12) cultures for 1-day and hippocampal primary neuronal cultures for 1-week to 50-200 μg/ml of tungsten-alloy (91% tungsten/6% nickel/3% cobalt), tungsten, nickel, and cobalt. We also examined the potential role of intracellular calcium in metal mediated histone modifications by addition of calcium channel blockers/chelators to the metal solutions. Tungsten and its alloy showed cytotoxicity at concentrations N 50 μg/ml, while we found significant toxicity with cobalt and nickel for most tested concentrations. Diverse cell-specific toxic effects were observed, with C2C12 being relatively resistant to tungsten-alloy mediated toxic impact. Tungsten-alloy, but not tungsten, caused almost complete dephosphorylation of H3-Ser10 in C2C12 and hippocampal primary neuronal cultures with H3-hypoacetylation in C2C12. Dramatic H3-Ser10 dephosphorylation was found in all cobalt treated cultures with a decrease in H3 pan-acetylation in C2C12, SKNMC and HEK293. Trimethylation of H3-K4 was not affected. Both tungsten-alloy and cobalt mediated H3-Ser10 dephosphorylation were reversed with BAPTA-AM, highlighting the role of intracellular calcium, confirmed with 2-photon calcium imaging. In summary, our results for the first time reveal epigenetic modifications triggered by tungsten-alloy exposure in C2C12 and hippocampal primary neuronal cultures suggesting the underlying synergistic effects of tungsten, nickel and cobalt mediated by changes in intracellular calcium homeostasis and buffering.Published by Elsevier Inc.

show abstract

“…saw-blades and drill bits), specialized scientific/technological components (i.e. X-ray tubes) [5][6][7], industrial catalysts [8] and ammunition [9]. The country with the most acute W pollution problems is China [10].…”

Section: Introductionmentioning

confidence: 99%

“…However, it's not just the manufacturing processes that are a cause of concern, leachates from E-waste repositories and recycling sites can also contain considerable amounts of W [12]. Measures to phase out lead in ammunition, has seen W being used as its replacement [13], resulting in a relatively new and poorly characterized exposure source/pathway [1,4,9].…”

Section: Introductionmentioning

confidence: 99%

High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

Guan

et al. 2016

Journal of Hazardous Materials

View full text Add to dashboard Cite

This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited. General rightsCopyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. high-resolution W profiling across sedimentwater and hotspotbulk media interfaces from Lake Taihu was obtained using PZ DGT coupled with laser ablation ICPMS measurement, and the apparent diffusion fluxes across the interfaces were calculated using a numerical model. KEY WORDS: diffusive gradients in thin-films (DGT); tungsten; precipitated zirconia (PZ) gel; sub-mm high resolution; hotspotbulk media interface.

show abstract

Environmental fate of tungsten from military use

Cited by 73 publications

References 10 publications

Assessing tungsten transport in the vadose zone: From dissolution studies to soil columns

Assessing tungsten transport in the vadose zone: From dissolution studies to soil columns

In vitro profiling of epigenetic modifications underlying heavy metal toxicity of tungsten-alloy and its components

High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

Contact Info

Product

Resources

About