Determination of exchangeable calcium of calcareous and gypsiferous bentonites

Clays and Clay Minerals

Volumn 58, Issue 1, 2010, Pages 79-88

  Dohrmann, Reiner ^a   Kaufhold, Stephan ^b  

^a Bundesanstalt für Geowissenschaften und Rohstoffe BGR   (Germany)

^b FEDERAL INSTITUTE FOR GEOSCIENCES AND NATURAL RESOURCES BGR   (Germany)

Author keywords

AgtuCcGp; Bentonites; CEC; CoHexCcGp method; Cu trien5 CcGp method; Exchangeable calcium; Gypsiferous clays; Method

Indexed keywords

AGTUCCGP; CALCITE DISSOLUTION; CATION EXCHANGE CAPACITIES; CEC; EXCHANGEABLE CATION; GYPSUM DISSOLUTION; INITIAL CONCENTRATION; METHODOLOGICAL TOOLS; REASONABLE VALUE; REFERENCE VALUES; TEST MATERIALS; TEST METHOD; THREE SOLUTIONS;

BENTONITE; CALCITE; CALCIUM ALLOYS; CARBONATE MINERALS; DISSOLUTION; EXPERIMENTS; GYPSUM; METALLIC COMPOUNDS; POLYVINYL ALCOHOLS; POSITIVE IONS;

CALCIUM;

BENTONITE; CALCITE; CALCIUM; CATION EXCHANGE CAPACITY; CLAY MINERAL; CONCENTRATION (COMPOSITION); EXPERIMENTAL MINERALOGY; GYPSUM; ION EXCHANGE; METHODOLOGY;

EID: 77950377740     PISSN: 00098604     EISSN: None     Source Type: Journal    
DOI: 10.1346/CCMN.2010.0580108     Document Type: Article

References (18)

1. Bascomb, C.L. (1964) Rapid method for the determination of the cation exchange capacity of calcareous and noncalcareous soils. Journal of the Science of Food and Agriculture, 15, 821-823.
2. Bergmann, J., Friedel, P., and Kleeberg, R. (1998) BGMN - a new fundamental parameter-based Rietveld program for laboratory X-ray sources, its use in quantitative analysis and structure investigations. Commission of Powder Diffraction, International Union of Crystallography, CPD Newsletter, 20, 5-8.
3. Deller, B. (1981) Determination of exchangeable acidity, carbonate ions and change of buffer in triethanolaminebuffered solutions percolated through soil samples containing carbonates. Communications in Soil Science and Plant Analysis, 12, 161-177.
4. Dohrmann, R. (2006a) Cation Exchange Capacity Methodology I: An efficient model for the detection of incorrect cation exchange capacity and exchangeable cation results. Applied Clay Science, 34, 31-37.
5. Dohrmann, R. (2006b) Cation Exchange Capacity Methodology II: proposal for a modified silver-thiourea method. Applied Clay Science, 34, 38-46.
6. Dohrmann, R. (2006c) Cation Exchange Capacity Methodology III: Correct exchangeable calcium determination of calcareous clays using a new silver-thiourea method. Applied Clay Science, 34, 47-57.
7. Dohrmann, R. (2006d) Problems in CEC determination of calcareous clayey sediments using the ammonium acetate method. Journal of Plant Nutrition and Soil Science, 169, 330-334.
8. Dohrmann, R. and Kaufhold, S. (2009) Three fastnew CEC methods for the determination of operationally correct exchangeable calcium cations in calcareous clays. Clays and Clay Minerals, 57, 251-265.
9. Florea, N. and Al-Joumaa, Kh. (1998) Genesis and classification of gypsiferous soils of the Middle Euphrates floodplain, Syria. Geoderma, 87, 67-85.
10. Hissink, D.J. (1923) Method for estimating adsorbed bases in soils and the importance of these bases in soil economy. Soil Science, 15, 269 pp.
11. Kaufhold, S. and Dohrmann, R. (2008) Detachment of colloids from bentonites in water. Applied Clay Science, 39, 50-59.
12. Kaufhold, S., Dohrmann, R., Koch, D., and Houben, G. (2008) The pH of aqueous bentonite suspensions. Clays and Clay Minerals, 56, 338-343.
13. Neal, C. (1977) The determination of adsorbed Na, K, Mg and Ca on sediments containing CaCO3 and MgCO3. Clays and Clay Minerals, 25, 253-258.
14. OECD (2009) Natural Tracer Profiles Across Argillaceous Formations: The CLAYTRAC Project. Nuclear Energy Agency, France, 361 pp.
15. Rhoades, J.D. (1996) Salinity: Electrical conductivity and total dissolved gasses. Pp. 417-437 in: Methods of Soil Analysis, Part 3. Chemical Methods (D.L. Sparks, editor). SSSA Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, USA.
16. Sumner, M.E. and Miller, W.P. (1996) Cation exchange capacity and exchange coefficients. Pp. 1201-1229 in: Methods of Soil Analysis, Part 3. Chemical Methods (D.L. Sparks, editor). SSSA Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, USA.
17. Tobia, S.K. and Milad, N.E. (1956) Determination of exchangeable calcium in soils containing calcium carbonate. Journal of the Science of Food and Agriculture, 7, 314-319.
18. Ufer, K., Stanjek, H., Roth, G., Dohrmann, R., Kleeberg, R., and Kaufhold, S. (2008) Quantitative phase analysis of bentonites with the Rietveld method. Clays and Clay Minerals, 56, 272-282.