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Impact of systematic change of redox potential on the leaching of Ba, Cr, Sr, and V from a riverine soil into water

Tina Frohne, Roland A Diaz-Bone, Gijs Du Laing UGent and Jörg Rinklebe (2015) JOURNAL OF SOILS AND SEDIMENTS. 15(3). p.623-633
abstract
Floodplain soils are often contaminated with toxic elements such as Ba, Cr, Sr, and V. For an adequate risk assessment of such contaminated sites, the assessment of factors affecting the leaching of those elements from riverine soils into water is fundamental. Since the redox potential (E-H) can be important within this context, we aimed to assess the impact of pre-set redox conditions on the dynamics of Ba, Cr, Sr, and V in a floodplain soil. To achieve this aim, we used an automatic biogeochemical microcosm system allowing computer-controlled regulation of E-H by adapting the supply of N-2 or O-2 to the soil suspension. With this system, the effect of E-H on the dynamics of Ba, Cr, Sr, and V was studied mechanistically. Chromium and V were negatively correlated with E-H possibly due to co-precipitation of these metals with Fe (hydr)oxides at high E-H. Vanadium might additionally be oxidized from more soluble V(IV) to less soluble V(V) with rising E-H. Barium and Sr were positively correlated with E-H, which might be attributed to their association with dissolved organic carbon (DOC). The influence of pH on the dynamics of the studied elements seemed to be of minor importance in our study. A significant negative correlation was observed between the specific UV absorbance at 254 nm (SUVA (254)) and E-H indicating that oxidizing conditions favored the removal of aromatic DOC molecules from solution via binding to Fe (hydr)oxides. Redox potential is important for metal fate in the current study. Results imply an absorption of Cr and V to Fe (hydr)oxides and an interaction with DOC while particularly Ba and Sr dynamics may be influenced by DOC. In the future, different V species in wetland soils under pre-definite redox conditions should be determined and further studies should elucidate the specific role of DOC and sulfur (S) chemistry on the dynamics of the studied metals.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
CHROMIUM, VANADIUM, BARIUM, SEDIMENT, IRON-OXIDES, NATURAL-WATERS, METAL CONCENTRATIONS, ELBE RIVER, FLOODPLAIN SOILS, DISSOLVED ORGANIC-CARBON, Wetland, Paddy soil, Heavy metals, Biogeochemical microcosm system, Alkaline earth metals
journal title
JOURNAL OF SOILS AND SEDIMENTS
J. Soils Sediments
volume
15
issue
3
pages
623 - 633
Web of Science type
Article
Web of Science id
000349605100013
JCR category
SOIL SCIENCE
JCR impact factor
2.206 (2015)
JCR rank
10/34 (2015)
JCR quartile
2 (2015)
ISSN
1439-0108
DOI
10.1007/s11368-014-1036-8
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
5918674
handle
http://hdl.handle.net/1854/LU-5918674
date created
2015-03-31 13:43:01
date last changed
2016-12-19 15:40:56
@article{5918674,
  abstract     = {Floodplain soils are often contaminated with toxic elements such as Ba, Cr, Sr, and V. For an adequate risk assessment of such contaminated sites, the assessment of factors affecting the leaching of those elements from riverine soils into water is fundamental. Since the redox potential (E-H) can be important within this context, we aimed to assess the impact of pre-set redox conditions on the dynamics of Ba, Cr, Sr, and V in a floodplain soil. 
To achieve this aim, we used an automatic biogeochemical microcosm system allowing computer-controlled regulation of E-H by adapting the supply of N-2 or O-2 to the soil suspension. With this system, the effect of E-H on the dynamics of Ba, Cr, Sr, and V was studied mechanistically. 
Chromium and V were negatively correlated with E-H possibly due to co-precipitation of these metals with Fe (hydr)oxides at high E-H. Vanadium might additionally be oxidized from more soluble V(IV) to less soluble V(V) with rising E-H. Barium and Sr were positively correlated with E-H, which might be attributed to their association with dissolved organic carbon (DOC). The influence of pH on the dynamics of the studied elements seemed to be of minor importance in our study. A significant negative correlation was observed between the specific UV absorbance at 254 nm (SUVA (254)) and E-H indicating that oxidizing conditions favored the removal of aromatic DOC molecules from solution via binding to Fe (hydr)oxides. 
Redox potential is important for metal fate in the current study. Results imply an absorption of Cr and V to Fe (hydr)oxides and an interaction with DOC while particularly Ba and Sr dynamics may be influenced by DOC. In the future, different V species in wetland soils under pre-definite redox conditions should be determined and further studies should elucidate the specific role of DOC and sulfur (S) chemistry on the dynamics of the studied metals.},
  author       = {Frohne, Tina and Diaz-Bone, Roland A and Du Laing, Gijs and Rinklebe, J{\"o}rg},
  issn         = {1439-0108},
  journal      = {JOURNAL OF SOILS AND SEDIMENTS},
  keyword      = {CHROMIUM,VANADIUM,BARIUM,SEDIMENT,IRON-OXIDES,NATURAL-WATERS,METAL CONCENTRATIONS,ELBE RIVER,FLOODPLAIN SOILS,DISSOLVED ORGANIC-CARBON,Wetland,Paddy soil,Heavy metals,Biogeochemical microcosm system,Alkaline earth metals},
  language     = {eng},
  number       = {3},
  pages        = {623--633},
  title        = {Impact of systematic change of redox potential on the leaching of Ba, Cr, Sr, and V from a riverine soil into water},
  url          = {http://dx.doi.org/10.1007/s11368-014-1036-8},
  volume       = {15},
  year         = {2015},
}

Chicago
Frohne, Tina, Roland A Diaz-Bone, Gijs Du Laing, and Jörg Rinklebe. 2015. “Impact of Systematic Change of Redox Potential on the Leaching of Ba, Cr, Sr, and V from a Riverine Soil into Water.” Journal of Soils and Sediments 15 (3): 623–633.
APA
Frohne, Tina, Diaz-Bone, R. A., Du Laing, G., & Rinklebe, J. (2015). Impact of systematic change of redox potential on the leaching of Ba, Cr, Sr, and V from a riverine soil into water. JOURNAL OF SOILS AND SEDIMENTS, 15(3), 623–633.
Vancouver
1.
Frohne T, Diaz-Bone RA, Du Laing G, Rinklebe J. Impact of systematic change of redox potential on the leaching of Ba, Cr, Sr, and V from a riverine soil into water. JOURNAL OF SOILS AND SEDIMENTS. 2015;15(3):623–33.
MLA
Frohne, Tina, Roland A Diaz-Bone, Gijs Du Laing, et al. “Impact of Systematic Change of Redox Potential on the Leaching of Ba, Cr, Sr, and V from a Riverine Soil into Water.” JOURNAL OF SOILS AND SEDIMENTS 15.3 (2015): 623–633. Print.