Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-15T11:19:30.239Z Has data issue: false hasContentIssue false
  • English
  • Français

Quantitative Determination of Clinoptilolite in Soils by a Cation-Exchange Capacity Method

Published online by Cambridge University Press:  02 April 2024

Douglas W. Ming  and
Joe B. Dixon
Douglas W. Ming*
Affiliation:
Department of Soil and Crop Sciences, Texas A&M University, College Station, Texas 77843
Joe B. Dixon
Affiliation:
Department of Soil and Crop Sciences, Texas A&M University, College Station, Texas 77843
*
1Present address: Mail Code SN 12, NASA Johnson Space Center, Houston. Texas 77058.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A cation-exchange capacity (CEC) method based on ion-sieving properties was developed for the quantitative determination of clinoptilolite in soils. In this method, both zeolitic and non-zeolitic exchange sites in the soil sample are saturated with Na+. The CEC of the non-zeolitic exchange sites is determined by replacing the Na− in these sites with tert-butylammonium ions. The tert-butylammonium ion cannot be exchanged into the zeolitic exchange sites because it is too large to pass through the channels in the clinoptilolite structure. The sample is next washed with NH4OAc to replace the Na+ in the zeolitic exchange sites. The amount of soil zeolite is then estimated by comparing the CEC of zeolitic exchange sites to the total zeolite CEC (175 meq/100 g for pure clinoptilolite). Prior to the CEC analyses, carbonates and organic matter must be removed to minimize interference with the exchange process. A high correlation (r2 = .96) was observed between the abundance of clinoptilolite estimated using the CEC method and the abundance estimated by semiquantitative X-ray powder diffraction analysis.

The CEC procedure was used to quantify clinoptilolite in an Aridic Calciustoll soil from south Texas. About 2–5% clinoptilolite occurs in the A and B horizons, and concentrations progressively increase with soil depth to as much as 20% in the CBk2 horizon.

Keywords

Cation-exchange capacityClinoptiloliteQuantitative mineralogySmectiteSoilTert-butylammoniumZeolite
Type
Research Article
Information
Clays and Clay Minerals , Volume 35 , Issue 6 , December 1987 , pp. 463 - 468
Copyright
Copyright © 1987, The Clay Minerals Society

References

Alexiades, C. A. and Jackson, M. L., 1965 Quantitative determination of vermiculite in soils Soil Sci. Soc. Amer. Proc. 29 522 – 527.CrossRefGoogle Scholar
Ames, L. L. Jr., 1960 Cation sieve properties of clinoptilolite Amer. Miner. 45 689 – 700.Google Scholar
Asvadurov, H., Popescu, F. and Constantinescu, M., 1978 Soluri si roci cu continut ridicat de potasiu schimbabil An. Inst. Cerc. Pedol. Agrochim. 43 115 – 123.Google Scholar
Barrer, R. M., Papadopoulos, R. and Rees, L. V. C., 1967 Exchange of sodium in clinoptilolite by organic cations J. Inorg. Nucl. Chem. 29 2047 – 2063.CrossRefGoogle Scholar
Fanning, D. S., Rabenhorst, M. C., Wagner, D. P. and Snow, P.A., 1983 Soils-geomorphology field trip in Maryland, August 12 and 13, 1983 Guidebook prepared in conjunction with American Society of Agronomy meeting, Washington, D.C., August 14–18, 1983 .Google Scholar
Gorbunov, N. I. and Bobrovitskiy, I., 1973 Distribution, genesis, structure, and properties of zeolite Soviet Soil Sci. 5 93 – 101.Google Scholar
Graham, R. C. and Southard, A. R., 1983 Genesis of a Vertisol and an associated Mollisol in northern Utah Soil Sci. Soc. Amer. J. 47 552 – 559.CrossRefGoogle Scholar
Jackson, M. L., 1974 Soil Chemical Analysis—Advanced Course .Google Scholar
Jacob, J. S., 1984 Persistence of a zeolite tuffaceous soil of the Texas Trans-Pecos Lubbock, Texas M.Sc. thesis, Texas Tech University.Google Scholar
Ming, D. W., 1985 Chemical and crystalline properties of clinoptilolite in south Texas soils Texas Ph.D. dissertation, Texas A&M University, College Station.Google Scholar
Ming, D. W. and Dixon, J. B., 1986 Clinoptilolite in south Texas soils Soil Sci. Soc. Amer. J. 50 1618 – 1622.CrossRefGoogle Scholar
Ming, D. W. and Dixon, J. B., 1987 Technique for the separation of clinoptilolite from soils Clays & Clay Minerals 35 469 – 472.CrossRefGoogle Scholar
Ming, D. W., Dixon, J. B. and Kalló, D., 1987 Occurrence and weathering of zeolites in soil environments Zeolite ’85 Netherlands Akadémiai Kiado, Budapest and D. Reidel, Dordrecht.Google Scholar
Ming, D. W., Mumpton, F. A., Dixon, J. B. and Weed, S. B., 1987 Zeolites in soils Minerals in Soil Environments Wisconsin Soil Science Society of America, Madison.Google Scholar
Pond, W. G. and Mumpton, F. A., 1984 Zeo-agri-culture: Use of Natural Zeolites in Agriculture and Aqua-culture Colorado Westview Press, Boulder.Google Scholar
Ruehlicke, G. and Kohler, E. E., 1981 A simplified procedure for determining layer charge by the n-alkylammo-mium method Clay Miner. 16 305 – 307.CrossRefGoogle Scholar
Southard, A. R. and Kolesar, P. T., 1978 An exotic source of extractable potassium in some soils of northern Utah Soil Sci. Soc. Amer. J. 42 528 – 530.CrossRefGoogle Scholar
Speirs, G. A., Pawluk, S. and Dudas, M. J., 1984 Authi-genic minerai formation by solodization Can. J. Soil Sci. 64 515 – 532.CrossRefGoogle Scholar
Travnikova, L. S., Gradusov, B. P. and Chizhikova, N. P., 1973 Zeolites in some soils Soviet Soil Sci. 5 251.Google Scholar