Determination of exchangeable acidity and exchangeable aluminium in hill soils part 1 exchangeable acidity

Abstract

Abstract Exchangeable acidity of soils has previously been measured by titration of soil extracts to a phenolphthalein endpoint at pH 8.3. The use of standard hydrogen and aluminium solutions indicates that this is inaccurate and a preferred technique, differential potentiometric titration is proposed. Key words: Soilsexchangeable acidity