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Segregation Procedure for the Mineralogical Analysis of Soils
Author(s) -
Jackson M. L.,
Whittig L. D.,
Pennington R. P.
Publication year - 1950
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/sssaj1950.036159950014000c0017x
Subject(s) - library science , graduate students , citation , sociology , computer science , pedagogy
Destruction of carbonates and H-saturation.—A 20-gm sample of 2 are carried out if necessary. Removal of soluble salts and exchangeable bases.—The sample is transferred to two or more 100 ml centrifuge tubes, with policing. The tubes are digested for 5 minutes in a hot water bath and centrifuged until the supernatant liquid is clear. The supernatant liquid, containing the soluble salts and exchangeable bases, is decanted. The soil in the tubes is washed three times in 95% ethanol, which has been acidified to pH 3.5 to 4.0 with HQ, and finally twice with ordinary 95% ethanol. In the preparation of large stocks of clay, the soluble salts are removed by filtration on an 11-cm buchner funnel.