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Chemical dissolution techniques in the study of soil clays: Part II

Published online by Cambridge University Press:  09 July 2018

E. A. C. Follett ,
W. J. McHardy ,
B. D. Mitchell  and
B. F. L. Smith
E. A. C. Follett
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
W. J. McHardy
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
B. D. Mitchell
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
B. F. L. Smith
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
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Abstract

The removal of the alkali-soluble fraction from soil clays has been found to influence markedly the efficiency with which iron oxides can be removed from such clays. In clays pretreated with 5% Na2CO3, up to 40% more iron oxide was extracted by dithionite (Na2S2O4) than from soil clays treated with this reagent alone. Chemical analysis, electron microscopy, X-ray and differential thermal examination, and specific surface area and cation-exchange capacity measurements indicated an improved dispersion brought about by the removal of aluminosilicate binding material by Na2CO3. The electron-optical studies also showed that the dithionite-soluble iron was principally in the form of small granules. These were amorphous to X-rays and electrons and chemical analysis of the dithionite-soluble fraction suggested that they were ferruginous complexes containing considerable quantities of silica and alumina.

Type
Research Article
Information
Clay Minerals , Volume 6 , Issue 1 , July 1965 , pp. 35 - 43
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1965

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References

Aguilera, N.H. & Jackson, M.L. (1953) Proc. Soil Sci. Soc. Am. 17, 359.CrossRefGoogle Scholar
Batisse, E.M. (1960) Ann. Agron. A11, 441.Google Scholar
Beckwith, R.S. & Reeve, R. (1964) Aust. J. Soil Res. 2, 33.CrossRefGoogle Scholar
Birrell, K.S. & Fieldes, M. (1952) J. Soil Sci. 3, 156.CrossRefGoogle Scholar
Brunauer, S., Emmett, P.H. & Teller, E. (1938) J. Am. chem. Soc. 60, 309.CrossRefGoogle Scholar
Carroll, D. (1958) Geochim. cosmochim. Acta 15, 1.CrossRefGoogle Scholar
de Endredy, A.S. (1963) Clay Miner. Bull. 5, 209.CrossRefGoogle Scholar
Fieldes, M. & Swindale, L.D. (1954) N.Z. J. Sci. Tech. B36, 140.Google Scholar
Fridland, V.M. (1961) Pochvovedenie No. 12, 57.Google Scholar
Gorbunov, N.I., Dzyadevich, G.S. & Tunik, B.M. (1961) Soviet Soil Sci. (English Transl.) No. 11, 1252.Google Scholar
Gradusov, B.P. & Targulyan, V.O. (1962) Soviet Soil Science (English Transl.) No. 11, 1237.Google Scholar
Hoyos, A. & Pino, C. (1958) Agrochimica 2, 218.Google Scholar
Jackson, M.L. (1956) Soil Chemical Analysis—Advanced Course. Published by ProfessorJackson, M. L., Madison, Wisconsin.Google Scholar
Jeffery, P.G. & Wilson, A.D. (1960) Analyst, Lond. 85, 478.CrossRefGoogle Scholar
Jeffries, C.D. & Johnson, L. (1961) Soil Sci. 92, 402.CrossRefGoogle Scholar
Kanno, I. (1959) Adv. Clay Sci. (Tokyo) 1, 213.Google Scholar
Mackenzie, R.C. (1951) J. Colloid Sci. 6, 219.Google Scholar
Mackenzie, R.C. & Meldau, R. (1959) Miner. Mag. 32, 153.Google Scholar
Mehra, O.P. & Jackson, M.L. (1960) Clays and Clay Minerals. Proc. 1th Conf., pp. 317-327. Pergamon Press, Oxford.Google Scholar
Mitchell, B.D. & Jarvis, R.A. (1956) The Soils of the Country round Kilmarnock. Mem. Soil Surv. Scot., H.M.S.O., Edinburgh.Google Scholar
Mitchell, B.D. & Mackenzie, R.C. (1954) Soil Sci. 11, 173.CrossRefGoogle Scholar
Mitchell, B.D. & Mitchell, W.A. (1956) Clay Miner. Bull. 3, 91.CrossRefGoogle Scholar
Norrish, K. & Taylor, R.M. (1961) J. Soil Sci. 12, 294–306.CrossRefGoogle Scholar
Robertson, G. (1950) J. Sci. Fd Agric. 1, 59.CrossRefGoogle Scholar
Scott, R.O. (1941) Analyst, Lond. 66, 142.CrossRefGoogle Scholar
Taboadela, M.M. (1953) J. Soil Sci. 4, 48.CrossRefGoogle Scholar
Tamm, O. (1922) Medd. Skogsforsoksanst. Stockholm 19, 385.Google Scholar
Taylor, R.M. (1959) J. Soil Sci. 10, 309.CrossRefGoogle Scholar