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Concentrations of 60 elements in the soil solution as related to the soil acidity

Tyler, Germund LU and Olsson, Tommy LU (2001) In European Journal of Soil Science 52(1). p.151-165
Abstract
Little is known about solubility and soil solution concentrations of most elements occurring in the solid phase of soils. This study reports changes in solution concentrations of 60 mineral elements following CaCO3 addition to a moderately acid semi-natural soil, and possible mechanisms accounting for the differing solubility patterns as related to soil acidity are discussed. Soil solutions were obtained by high-speed centrifuging and ultrafiltration (0.2 mum) of samples at 60% water-holding capacity of the A horizon of a Cambisol developed from a shale-gneiss moraine and supplied with CaCO3 at 20 rates to yield a soil solution pH range of 5.2-7.8. Concentrations of elements were determined in the solutions by ICP-AES or (for most... (More)
Little is known about solubility and soil solution concentrations of most elements occurring in the solid phase of soils. This study reports changes in solution concentrations of 60 mineral elements following CaCO3 addition to a moderately acid semi-natural soil, and possible mechanisms accounting for the differing solubility patterns as related to soil acidity are discussed. Soil solutions were obtained by high-speed centrifuging and ultrafiltration (0.2 mum) of samples at 60% water-holding capacity of the A horizon of a Cambisol developed from a shale-gneiss moraine and supplied with CaCO3 at 20 rates to yield a soil solution pH range of 5.2-7.8. Concentrations of elements were determined in the solutions by ICP-AES or (for most elements) ICP-MS. Several distinct patterns of soil solution concentrations as a function of soil solution pH were demonstrated. Positively related to pH and CaCO3 supply were soil solution concentrations of As, Br, Mo, S, Sb, Se, U, and W, and to a lesser degree, Co, Cr, Hg, Mg, and Sr. Inversely related to pH were concentrations of Al, B, Ba, Bi, Cs, Ce, Eu, Ga, Ge, Fe, Li, K, Rb, Na, Th, and Ti; less distinctly inversely rated were Dy, Er, Gd, Hf, La, Lu, Mn, Nd, Pr, Sm, Sc, Si, Tl, Tm, and Yb. 'U-shaped' relationships to pH were demonstrated for the concentrations of Ag, Cd, Nb, Ni, P, V, and Zr. There were no or irregular relations between pH and concentrations of Be, Cu, Ho, Pb, Ta, and Tb. Differences between elements in their soil solution concentrations as related to total (HNO3-digestible) concentrations and the solubility of organic C were also treated. Increasing the pH of a soil by adding CaCO3 changes the solubility of most mineral elements substantially, the several distinct patterns observed being governed by, for example, ionic properties and charge, affinity for organic compounds, and pH-dependent formation and solubility of complexes. (Less)
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Contribution to journal
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published
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in
European Journal of Soil Science
volume
52
issue
1
pages
151 - 165
publisher
Wiley-Blackwell
external identifiers
  • scopus:0035083448
ISSN
1365-2389
language
English
LU publication?
yes
id
91d580d8-ea02-472a-979f-6c61e1ce9247 (old id 147263)
alternative location
http://www.blackwell-synergy.com/doi/abs/10.1046/j.1365-2389.2001.t01-1-00360.x
date added to LUP
2007-07-02 15:03:30
date last changed
2018-08-05 03:40:30
@article{91d580d8-ea02-472a-979f-6c61e1ce9247,
  abstract     = {Little is known about solubility and soil solution concentrations of most elements occurring in the solid phase of soils. This study reports changes in solution concentrations of 60 mineral elements following CaCO3 addition to a moderately acid semi-natural soil, and possible mechanisms accounting for the differing solubility patterns as related to soil acidity are discussed. Soil solutions were obtained by high-speed centrifuging and ultrafiltration (0.2 mum) of samples at 60% water-holding capacity of the A horizon of a Cambisol developed from a shale-gneiss moraine and supplied with CaCO3 at 20 rates to yield a soil solution pH range of 5.2-7.8. Concentrations of elements were determined in the solutions by ICP-AES or (for most elements) ICP-MS. Several distinct patterns of soil solution concentrations as a function of soil solution pH were demonstrated. Positively related to pH and CaCO3 supply were soil solution concentrations of As, Br, Mo, S, Sb, Se, U, and W, and to a lesser degree, Co, Cr, Hg, Mg, and Sr. Inversely related to pH were concentrations of Al, B, Ba, Bi, Cs, Ce, Eu, Ga, Ge, Fe, Li, K, Rb, Na, Th, and Ti; less distinctly inversely rated were Dy, Er, Gd, Hf, La, Lu, Mn, Nd, Pr, Sm, Sc, Si, Tl, Tm, and Yb. 'U-shaped' relationships to pH were demonstrated for the concentrations of Ag, Cd, Nb, Ni, P, V, and Zr. There were no or irregular relations between pH and concentrations of Be, Cu, Ho, Pb, Ta, and Tb. Differences between elements in their soil solution concentrations as related to total (HNO3-digestible) concentrations and the solubility of organic C were also treated. Increasing the pH of a soil by adding CaCO3 changes the solubility of most mineral elements substantially, the several distinct patterns observed being governed by, for example, ionic properties and charge, affinity for organic compounds, and pH-dependent formation and solubility of complexes.},
  author       = {Tyler, Germund and Olsson, Tommy},
  issn         = {1365-2389},
  language     = {eng},
  number       = {1},
  pages        = {151--165},
  publisher    = {Wiley-Blackwell},
  series       = {European Journal of Soil Science},
  title        = {Concentrations of 60 elements in the soil solution as related to the soil acidity},
  volume       = {52},
  year         = {2001},
}