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Effect of water table level on metal mobility at different depths in wetland soils of the Scheldt Estuary (Belgium)

(2009) WATER AIR AND SOIL POLLUTION. 202(1-4). p.353-367
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Abstract
An experiment was set up to assess the factors affecting metal mobility in five wetland soils of the Scheldt estuary at different sampling depths when subjecting the soils to various water table levels. Pore water metal concentrations were monitored for 10 months at four sampling depths (10, 30, 60 and 90 cm) upon adjusting the water table level to 0, 40 and 80 cm below the surface of the soils. Nickel (Ni) release is facilitated by reductive conditions. These reductive conditions mainly occur below the water table. The fate of chromium (Cr) under reductive conditions seems to be promoted by the presence of dissolved organic matter. However, Cr fate seems to be inconsistent between the soils, as it is affected by a series of counteracting mechanisms. Copper (Cu), zinc (Zn) and especially cadmium (Cd) are all primarily released above the water table under high salinity conditions. These elements are also released below or just above the water table when organic matter is being decomposed, resulting in calcium (Ca), manganese (Mn), Ni and/or iron (Fe) release upon CO2 accumulation and Fe/Mn oxide reduction, without being accompanied by sulphide production. Their mobility is low under reducing conditions, i.e. in the presence of sulphides, whereas the complexation by soluble organic matter especially seems to promote Cu mobility.
Keywords
Availability, Trace elements, Floodplain, Flooding, Marsh, Soil profile, DISSOLVED ORGANIC-MATTER, TRACE-METALS, INTERTIDAL SEDIMENTS, CONTAMINATED SOILS, REDOX CHEMISTRY, RIVER SCHELDT, HEAVY-METALS, CD, ZN, SALINITY

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Citation

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Chicago
Du Laing, Gijs, Erik Meers, Marjan Dewispelaere, Jörg Rinklebe, Bart Vandecasteele, Marc Verloo, and Filip Tack. 2009. “Effect of Water Table Level on Metal Mobility at Different Depths in Wetland Soils of the Scheldt Estuary (Belgium).” Water Air and Soil Pollution 202 (1-4): 353–367.
APA
Du Laing, Gijs, Meers, E., Dewispelaere, M., Rinklebe, J., Vandecasteele, B., Verloo, M., & Tack, F. (2009). Effect of water table level on metal mobility at different depths in wetland soils of the Scheldt Estuary (Belgium). WATER AIR AND SOIL POLLUTION, 202(1-4), 353–367.
Vancouver
1.
Du Laing G, Meers E, Dewispelaere M, Rinklebe J, Vandecasteele B, Verloo M, et al. Effect of water table level on metal mobility at different depths in wetland soils of the Scheldt Estuary (Belgium). WATER AIR AND SOIL POLLUTION. 2009;202(1-4):353–67.
MLA
Du Laing, Gijs, Erik Meers, Marjan Dewispelaere, et al. “Effect of Water Table Level on Metal Mobility at Different Depths in Wetland Soils of the Scheldt Estuary (Belgium).” WATER AIR AND SOIL POLLUTION 202.1-4 (2009): 353–367. Print.
@article{853441,
  abstract     = {An experiment was set up to assess the factors affecting metal mobility in five wetland soils of the Scheldt estuary at different sampling depths when subjecting the soils to various water table levels. Pore water metal concentrations were monitored for 10 months at four sampling depths (10, 30, 60 and 90 cm) upon adjusting the water table level to 0, 40 and 80 cm below the surface of the soils. Nickel (Ni) release is facilitated by reductive conditions. These reductive conditions mainly occur below the water table. The fate of chromium (Cr) under reductive conditions seems to be promoted by the presence of dissolved organic matter. However, Cr fate seems to be inconsistent between the soils, as it is affected by a series of counteracting mechanisms. Copper (Cu), zinc (Zn) and especially cadmium (Cd) are all primarily released above the water table under high salinity conditions. These elements are also released below or just above the water table when organic matter is being decomposed, resulting in calcium (Ca), manganese (Mn), Ni and/or iron (Fe) release upon CO2 accumulation and Fe/Mn oxide reduction, without being accompanied by sulphide production. Their mobility is low under reducing conditions, i.e. in the presence of sulphides, whereas the complexation by soluble organic matter especially seems to promote Cu mobility.},
  author       = {Du Laing, Gijs and Meers, Erik and Dewispelaere, Marjan and Rinklebe, J{\"o}rg and Vandecasteele, Bart and Verloo, Marc and Tack, Filip},
  issn         = {0049-6979},
  journal      = {WATER AIR AND SOIL POLLUTION},
  keyword      = {Availability,Trace elements,Floodplain,Flooding,Marsh,Soil profile,DISSOLVED ORGANIC-MATTER,TRACE-METALS,INTERTIDAL SEDIMENTS,CONTAMINATED SOILS,REDOX CHEMISTRY,RIVER SCHELDT,HEAVY-METALS,CD,ZN,SALINITY},
  language     = {eng},
  number       = {1-4},
  pages        = {353--367},
  title        = {Effect of water table level on metal mobility at different depths in wetland soils of the Scheldt Estuary (Belgium)},
  url          = {http://dx.doi.org/10.1007/s11270-009-9982-2},
  volume       = {202},
  year         = {2009},
}

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