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Characterization of phosphorus fractions in mountain soils of the Bavarian Alps by 31 P NMR spectroscopy
Author(s) -
Zech Wolfgang,
Alt Helmut G.,
Haumaier Ludwig,
Blasek Roland
Publication year - 1987
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19871500212
Subject(s) - pyrophosphate , soil water , chemistry , phosphorus , phosphate , nuclear magnetic resonance spectroscopy , soil test , nuclear chemistry , environmental chemistry , geology , stereochemistry , soil science , organic chemistry , enzyme
NaOH‐extracts from different soils of the alpine and shrub zones at the Schneibstein (Nationalpark Berchtesgaden) between 1790–2275 m were studied using 31 P NMR spectroscopy. NaOH (0.5 M) dissolved 29–49% of P t . 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.