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The Chemical Analysis of Clays, with Special Reference to clay Fractions of Soils

Published online by Cambridge University Press:  27 March 2009

Ruby C. Groves
Ruby C. Groves
Affiliation:
(Mineral Resources Department, Imperial Institute, London, S.W.7.)
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Extract

1. Comparisons are made of the results obtained in the analysis of clays, especially of clay fractions separated from soils, by the standard sodium carbonate fusion method and by attack by means of mixed acids. Provided certain precautions are taken, in the latter case, the percentages of silica obtained are shown to be comparable with those given by the fusion method.

2. A possible disadvantage of the acid method is that the attack of the clay is not invariably successful, but treatment of the silica with hydrofluoric acid provides a convenient and reliable means of detecting those cases in which failure occurs. Such clays must be decomposed by fusion with sodium carbonate.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 23 , Issue 4 , October 1933 , pp. 519 - 526
Copyright
Copyright © Cambridge University Press 1933

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References

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