Separation of Aluminum Phosphate from Iron Phosphate in Soils.
Aluminum phosphate in the soil can be more discretely separated from iron phosphate by extracting 1 gram of soil with 50 milliliters of neutral 0.5N ammonium fluoride solution for 1 hour than by extracting with alkaline solution for a longer period of time.
Chang
S C
SC
Liaw
F H
FH