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Phosphatformen in Unterwasserböden Ca‐reicher Fließgewässer
Author(s) -
Baumann G.,
Fischer W. R.
Publication year - 1978
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.19781410405
Subject(s) - environmental chemistry , oxalate , soil water , phosphorus , chemistry , carbonate , phosphate , inorganic chemistry , ecology , biology , organic chemistry
Forms of phosphates in underwater soils of Ca‐rich running waters Underwater soils of small carbonaceous rivers in Upper Bavaria have phosphorus contents between 300 ppm in oligotrophic creeks and more than 0.2% in heavily polluted waters. The (Al,Fe)‐P and the Ca‐P occupied 20–35% and 28–38% of total phosphorus (P t ) resp., so that inorganic phosphates represent 53 to 64% of P t . The correlation between P t and carbonate is negative, but is positive between P t and oxalate Fe or organic substance. Addition of P results in a relative increase of (Al,Fe)‐P compared with other forms. Approximately 7 to 15% of total P is subject to isotopic exchange with 32 P.