A Simple Barium Chloride Method for Determining Cation Exchange Capacity and Exchangeable Cations
- 1 May 1986
- journal article
- research article
- Published by Wiley in Soil Science Society of America Journal
- Vol. 50 (3) , 605-608
- https://doi.org/10.2136/sssaj1986.03615995005000030013x
Abstract
Seventeen soil samples from acidic forest soils (Typic and Pergelic Cryorthods) and near‐neutral agricultural soils (Typic Haplaquepts) were used in an experiment to compare three methods of determining cation exchange capacity (CEC). The methods tested are the sum of cations displaced with 0.1 M BaCl2, and exchangeable Ba after saturation with BaCl2 and replacement with either MgSO4 (compulsive exchange) or MgCl2. The results show that when Al, Mn, and Fe are included with Ca, Mg, Na, and K in the sum of cations, this method gives the same result as do the other methods. It is recommended that this simple one‐step method be used in routine analysis of acidic soils, especially when nonagricultural lands are under investigation.Funding Information
- Natural Sciences and Engineering Research Council of Canada
- Fisheries and Oceans Canada
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