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Mobilization of X‐ray amorphous and crystalline aluminum and iron phosphates by common soil extraction procedures
Author(s) -
Prietzel Jörg
Publication year - 2017
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201600374
Subject(s) - extraction (chemistry) , amorphous solid , chemistry , phosphate , oxalate , dithionite , aluminium , nuclear chemistry , iron phosphate , inorganic chemistry , crystallography , chromatography , organic chemistry , enzyme
Soil extraction with 0.1 M NaOH completely dissolves X‐ray amorphous as well as crystalline AlPO 4 and FePO 4 . Extraction with acidic NH 4 oxalate completely mobilizes X‐ray amorphous AlPO 4 and FePO 4 in addition to phosphate adsorbed to poorly‐crystallized Al and Fe minerals, but only a minor portion of crystalline AlPO 4 and FePO 4 . Extraction with dithionite‐citrate‐bicarbonate mobilizes X‐ray amorphous AlPO 4 and FePO 4 as well as crystalline FePO 4 , but only a minor portion of crystalline AlPO 4 .