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Rapid Determination of Exchangeable Bases, Acidity, and Base Saturation for Soil Characterization
Author(s) -
Hajek B. F.,
Adams F.,
Cope, J. T.
Publication year - 1972
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/sssaj1972.03615995003600030021x
Subject(s) - chemistry , ultisol , triethanolamine , base (topology) , saturation (graph theory) , acid–base reaction , atomic absorption spectroscopy , environmental chemistry , chromatography , analytical chemistry (journal) , soil water , soil science , environmental science , mathematics , organic chemistry , mathematical analysis , physics , combinatorics , quantum mechanics
Routine, rapid, soil‐testing procedures were used for measuring both exchangeable bases and exchangeable acidity. Exchangeable bases were extracted by a single wash with a dilute HCl + H 2 SO 4 solution and analyzed by flame spectrophotometry and atomic absorption. Exchangeable acidity was determined by the pH change of a buffered solution‐soil suspension. The values obtained compared favorably with values determined by NH 4 OAc, NaOAc, and BaCl 2 ‐triethanolamine and were suitable for separation of Ultisols from Alfisols and mollic from umbric epipedons.