Mobilization of aluminium in soil columns exposed to acids or salt solutions
✍ Scribed by Marek Kotowski; Lucjan Pawłowski; Hans Martin Seip; Rolf David Vogt
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 555 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0925-8574
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✦ Synopsis
Mobilization of aluminium due to acid precipitation was studied in laboratory experiments using soil columns. Podzol soils were collected from the Janow forest south of Lublin, Poland, a site where field studies have been performed. The experiments were carried out with synthetic solutions of mineral acids (H2SO4, HNO 3) and fertilizer salts ((NH4)2SO 4 and NHaNO 3) with concentrations of ionic species in the range 10-6-10 -3 eq/l. In agreement with observations in the field, it was found that the greatest amounts of aluminium were mobilized from the illuvial (Bhs) and spodic (Bs) soil horizons. Mobilization of aluminium by HNO 3 was in most cases higher than by H2SO 4 for the same concentrations. The two salt solutions gave similar results; for the most concentrated solutions the mobilization from the B-horizons was between that observed for H2SO 4 and HNO 3. The acids mobilized greater amounts of A1 from the C-horizon.