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Controlling mechanisms of aluminium in soil solution: An evaluation of 180 of podzolic forest soils
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Department of Analytical Chemistry, Uppsala University, P.O. Box 531, S-751 21 Uppsala.
Department of Environmental Sciences, University of Karlstad, S-651 88 Karlstad.
2001 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 45, no 6-7, 1091-1101 p.Article in journal (Refereed) Published
Abstract [en]

To monitor the level of soil acidification in the county of Värmland in the middle west of Sweden 180 podzolic forest soils were investigated. Soil solutions from four horizons were obtained by centrifugation and the soil was sampled for a determination of the exchangeable pool by extraction. The concentrations of inorganic Al and its fraction of the total Al in solution were greater in the south of the county (up to 50%). The factors influencing the total Al and free inorganic Al3+ in the soil solutions were evaluated. Saturation indices (SI) for five different mineral phases were calculated but none implied equilibrium conditions. The relationships between pAl3+ and pH (in the pH range 4-6.2) gave slopes of about 1, which indicated that ion exchange/complexation reactions may be important for determining the Al3+ concentration in the B and C horizons. In the E horizon solutions complexation with soluble organic acids seemed to be the major factor which influenced the Al3+ activity. The influence of organic matter on Al solubility was supported by partial least square (PLS) regressions.

Place, publisher, year, edition, pages
2001. Vol. 45, no 6-7, 1091-1101 p.
Keyword [en]
Aluminium, Forest soil, Soil solution, Solubility control
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-1069DOI: 10.1016/S0045-6535(00)00515-4ISI: 000171507700045PubMedID: 11695586Scopus ID: 2-s2.0-0034790055Local ID: 1624OAI: oai:DiVA.org:miun-1069DiVA: diva2:26101
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2016-10-11Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
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