Premium
Extraction Procedure for Determining Solution and Exchangeable Ions on the Same Soil Sample
Author(s) -
Phillips I. R.,
Bond W. J.
Publication year - 1989
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1989.03615995005300040050x
Subject(s) - extraction (chemistry) , chemistry , ammonium , ammonium acetate , composition (language) , soil water , ion exchange , ion , ionic bonding , soil test , cation exchange capacity , chromatography , ion exchange resin , analytical chemistry (journal) , environmental chemistry , soil science , inorganic chemistry , environmental science , high performance liquid chromatography , linguistics , philosophy , organic chemistry
A procedure is described which allows the ionic composition of the soil solution and exchange phases to be measured on the same small soil sample. This procedure is based on existing methods which use a dense, water‐immiscible liquid to displace soil solution during high speed centrifugation. Exchangeable ions are then extracted by shaking the soil with 1.0 mol L −1 ammonium acetate (pH 7), after which the soil is oven‐dried and the water content determined. The solution extracted from the soil sample accurately represents the ionic composition of the equilibrium soil solution and the procedure does not affect the ionic composition of the exchange phase.