Antimony retention and release from drained and waterlogged shooting range soil under field conditions

Hockmann, Kerstin; Tandy, Susan; Lenz, Markus; Reiser, René; Conesa, Héctor M.; Keller, Martin; Studer, Björn; Schulin, Rainer

doi:10.1016/j.chemosphere.2014.12.020

Cited by 52 publications

(22 citation statements)

References 42 publications

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“…Furthermore, our results show a close positive correlation between the concentration of Sb and DOC in the two experimental treatments (both p < 0.0001, Figure S2a,b). This is similar to previous findings from Hockmann et al [57] during a leaching experiment of a shooting range soil (non-waterlogged calcareous soil). Additionally, the Sb concentrations in a stream draining a contaminated shooting range in Norway also correlated closely positively with the DOC concentrations [23].…”

Section: Sb Mobility Under Flooded Conditionssupporting

confidence: 82%

“…However, without solid-state speciation analysis by determining the X-ray absorption near edge structure (XANES), this hypothesis cannot be confirmed. Our assumption is nonetheless supported by the finding that Sb(III) was the major Sb species in the soil measured by XANES in the solid phase after flooding incubations [57,58]. [B] Another hypothesis for the sudden decrease in soluble Sb is the formation of colloids, defined as solid particles with a diameter between 1 nm and 1 µm [66].…”

Section: Sb Mobility Under Flooded Conditionssupporting

confidence: 56%

“…Hockmann et al [57] found a similar pattern in a lysimeter experiment with shooting range soils, although at much lower concentrations. However, a direct comparison of the results of Hockmann et al [57] with ours is difficult, because their study was run for a much longer time than ours (i.e., months versus days). Others measured an increase of Sb concentrations in streams draining shooting ranges after heavy precipitation events, reaching concentrations of several tens of µg L −1 [25][26][27].…”

Section: Sb Mobility Under Flooded Conditionsmentioning

confidence: 59%

“…Furthermore, a field study on the same soils as used for the column experiment by Okkenhaug et al [56] also showed soil solution concentrations of Sb in the hundreds of µg L −1 [12]. Hockmann et al [57] found a similar pattern in a lysimeter experiment with shooting range soils, although at much lower concentrations. However, a direct comparison of the results of Hockmann et al [57] with ours is difficult, because their study was run for a much longer time than ours (i.e., months versus days).…”

Section: Sb Mobility Under Flooded Conditionsmentioning

confidence: 66%

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Release and Biomethylation of Antimony in Shooting Range Soils upon Flooding

2018

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Antimony (Sb) is an understudied pollutant with potentially toxic effects at particularly low concentrations. The fate of Sb in the environment is complicated because of its many chemical forms at varying oxidation states. Here, we validated an extraction method and an analytical technique to quantify inorganic and methylated Sb in bulk soil and soil solution. We identified and quantified trimethylantimony (TMSb) in shooting range soils for the first time, up to a concentration of 1.35 mg kg −1 . Then, we evaluated the release of Sb species from soil to soil solution as well as the influence of manure addition upon flooding in an incubation experiment with fresh soils from shooting ranges. This incubation experiment showed an immediate and exhaustive Sb release into the soil solution (within 6 h), reaching over 3000 µg L −1 for one site, followed by a sharp decline and again a slow increase at the end of the incubation in Sb concentrations in the soil solution for two of the three sites. TMSb was also formed in the soil solution after 4 to 10 days. High dissolved organic carbon (DOC) concentrations and the dissolution of Fe-and Mn-(oxy-)hydroxides were the main drivers of Sb release, while the addition of organic matter (OM) drove TMSb formation.

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Section: Sb Mobility Under Flooded Conditionssupporting

confidence: 82%

Section: Sb Mobility Under Flooded Conditionssupporting

confidence: 56%

Section: Sb Mobility Under Flooded Conditionsmentioning

confidence: 59%

Section: Sb Mobility Under Flooded Conditionsmentioning

confidence: 66%

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Release and Biomethylation of Antimony in Shooting Range Soils upon Flooding

2018

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“…A few examples below underline the potential use of redox-stat bioreactors. Recently, a considerable seasonal variability of Sb leaching was found in outdoor lysimeters containing contaminated shooting range soils (Hockmann et al 2015). Although under drained (i.e.…”

Section: Discussionmentioning

confidence: 99%

Redox-stat bioreactors for elucidating mobilisation mechanisms of trace elements: an example of As-contaminated mining soils

Rajpert

Schäffer

Lenz

2018

Appl Microbiol Biotechnol

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The environmental fate of major (e.g. C, N, S, Fe and Mn) and trace (e.g. As, Cr, Sb, Se and U) elements is governed by microbially catalysed reduction-oxidation (redox) reactions. Mesocosms are routinely used to elucidate trace metal fate on the basis of correlations between biogeochemical proxies such as dissolved element concentrations, trace element speciation and dissolved organic matter. However, several redox processes may proceed simultaneously in natural soils and sediments (particularly, reductive Mn and Fe dissolution and metal/metalloid reduction), having a contrasting effect on element mobility. Here, a novel redox-stat (Rcont) bioreactor allowed precise control of the redox potential (159 ± 11 mV, ~ 2 months), suppressing redox reactions thermodynamically favoured at lower redox potential (i.e. reductive mobilisation of Fe and As). For a historically contaminated mining soil, As release could be attributed to desorption of arsenite [As(III)] and Mn reductive dissolution. By contrast, the control bioreactor (Rnat, with naturally developing redox potential) showed almost double As release (337 vs. 181 μg g−1) due to reductive dissolution of Fe (1363 μg g−1 Fe2+ released; no Fe2+ detected in Rcont) and microbial arsenate [As(V)] reduction (189 μg g−1 released vs. 46 μg g−1 As(III) in Rcont). A redox-stat bioreactor thus represents a versatile tool to study processes underlying mobilisation and sequestration of other trace elements as well.Electronic supplementary materialThe online version of this article (10.1007/s00253-018-9165-4) contains supplementary material, which is available to authorized users.

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Phytoremediation of Shooting Range Soils

Bandara

Vithanage

2016

Phytoremediation

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Antimony retention and release from drained and waterlogged shooting range soil under field conditions

Cited by 52 publications

References 42 publications

Release and Biomethylation of Antimony in Shooting Range Soils upon Flooding

Release and Biomethylation of Antimony in Shooting Range Soils upon Flooding

Redox-stat bioreactors for elucidating mobilisation mechanisms of trace elements: an example of As-contaminated mining soils

Phytoremediation of Shooting Range Soils

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