Characterization of phosphorus fractions in mountain soils of the Bavarian Alps by 31P NMR spectroscopy
- 1 January 1987
- journal article
- research article
- Published by Wiley in Journal of Plant Nutrition and Soil Science
- Vol. 150 (2), 119-123
- https://doi.org/10.1002/jpln.19871500212
Abstract
NaOH‐extracts from different soils of the alpine and shrub zones at the Schneibstein (Nationalpark Berchtesgaden) between 1790–2275 m were studied using 31P NMR spectroscopy. NaOH (0.5 M) dissolved 29–49% of Pt. Orthophosphate monoesters were the dominant fraction (41–79%). Orthophosphate diesters comprised 10–20%. A higher diester content (36%) was found in a hydromorphic soil. Inorganic phosphate comprised 5–27%, depending on soil pH. So, in acid horizons (pH 4.45 and 5.05) 27 and 23% were detected, whereas in horizons with higher pH (> 6) only small amounts (5–8%) were found. Pyrophosphate and polyphosphates were found in traces. Phosphonates (ca. 6%) occurred mainly in acid soils.This publication has 7 references indexed in Scilit:
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