Evaluation of cation exchange capacity measurements for variable charge soils
The CEC of various Spanish soils derived from volcanic ashes was determined by using different procedures: (1) displacement with 1N NaOAc, pH 8.2 (2) effective CEC determined as the total exchangeable bases displaced with NH40Ac plus exchangeable A1 extracted with 1N KCl and (3) compulsive exchange of Mg for Ba. The order of magnitude of the CEC values obtained was NaOAc» effective CEC > compulsive exchange. The effect which the method used has on determining the quantitative value of the CEC was established clearly. What is more, the results have shown that the effect in ques tion is more noticeable when the variable charge characteristics of the soils increase as a result of their mineralogical composition and their organic matter content.
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| Format: | artículo biblioteca |
| Language: | English |
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Taylor & Francis
1988-02
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| Subjects: | Andosols, C.E.C, Methods, Variable charge surfaces, |
| Online Access: | http://hdl.handle.net/10261/244517 |
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dig-ica-es-10261-2445172021-06-24T02:20:23Z Evaluation of cation exchange capacity measurements for variable charge soils Guadalix, M. Eugénia Pardo Fernández, María Teresa Hernando Fernández, Valentín Andosols C.E.C Methods Variable charge surfaces The CEC of various Spanish soils derived from volcanic ashes was determined by using different procedures: (1) displacement with 1N NaOAc, pH 8.2 (2) effective CEC determined as the total exchangeable bases displaced with NH40Ac plus exchangeable A1 extracted with 1N KCl and (3) compulsive exchange of Mg for Ba. The order of magnitude of the CEC values obtained was NaOAc» effective CEC > compulsive exchange. The effect which the method used has on determining the quantitative value of the CEC was established clearly. What is more, the results have shown that the effect in ques tion is more noticeable when the variable charge characteristics of the soils increase as a result of their mineralogical composition and their organic matter content. Peer reviewed 2021-06-23T12:53:47Z 2021-06-23T12:53:47Z 1988-02 artículo http://purl.org/coar/resource_type/c_6501 Communications in Soil Science and Plant Analysis 19(3): 271-279 (1988) 0010-3624 http://hdl.handle.net/10261/244517 10.1080/00103628809367938 1532-2416 en http://dx.doi.org/10.1080/00103628809367938 Sí none Taylor & Francis |
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Andosols C.E.C Methods Variable charge surfaces Andosols C.E.C Methods Variable charge surfaces |
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Andosols C.E.C Methods Variable charge surfaces Andosols C.E.C Methods Variable charge surfaces Guadalix, M. Eugénia Pardo Fernández, María Teresa Hernando Fernández, Valentín Evaluation of cation exchange capacity measurements for variable charge soils |
| description |
The CEC of various Spanish soils derived from volcanic ashes was determined by using different procedures: (1) displacement with 1N NaOAc, pH 8.2 (2) effective CEC determined as the total exchangeable bases displaced with NH40Ac plus exchangeable A1 extracted with 1N KCl and (3) compulsive exchange of Mg for Ba. The order of magnitude of the CEC values obtained was NaOAc» effective CEC > compulsive exchange. The effect which the method used has on determining the quantitative value of the CEC was established clearly. What is more, the results have shown that the effect in ques tion is more noticeable when the variable charge characteristics of the soils increase as a result of their mineralogical composition and their organic matter content. |
| format |
artículo |
| topic_facet |
Andosols C.E.C Methods Variable charge surfaces |
| author |
Guadalix, M. Eugénia Pardo Fernández, María Teresa Hernando Fernández, Valentín |
| author_facet |
Guadalix, M. Eugénia Pardo Fernández, María Teresa Hernando Fernández, Valentín |
| author_sort |
Guadalix, M. Eugénia |
| title |
Evaluation of cation exchange capacity measurements for variable charge soils |
| title_short |
Evaluation of cation exchange capacity measurements for variable charge soils |
| title_full |
Evaluation of cation exchange capacity measurements for variable charge soils |
| title_fullStr |
Evaluation of cation exchange capacity measurements for variable charge soils |
| title_full_unstemmed |
Evaluation of cation exchange capacity measurements for variable charge soils |
| title_sort |
evaluation of cation exchange capacity measurements for variable charge soils |
| publisher |
Taylor & Francis |
| publishDate |
1988-02 |
| url |
http://hdl.handle.net/10261/244517 |
| work_keys_str_mv |
AT guadalixmeugenia evaluationofcationexchangecapacitymeasurementsforvariablechargesoils AT pardofernandezmariateresa evaluationofcationexchangecapacitymeasurementsforvariablechargesoils AT hernandofernandezvalentin evaluationofcationexchangecapacitymeasurementsforvariablechargesoils |
| _version_ |
1777663766498902016 |