Effective cation-exchange capacity in Finnish mineral soils
نویسندگان
چکیده
منابع مشابه
Black Carbon Increases Cation Exchange Capacity in Soils
Black Carbon (BC) may significantly affect nutrient retention and play a key role in a wide range of biogeochemical processes in soils, especially for nutrient cycling. Anthrosols from the Brazilian Amazon (ages between 600 and 8700 yr BP) with high contents of biomassderived BC had greater potential cation exchange capacity (CECmeasured at pH 7) per unit organic C than adjacent soils with low ...
متن کامل'vermiculite' Determination on Whole Soils by Cation Exchange Capacity Methods*
-The proposed method is a modification of one by Alexiades and Jackson (1965). Calcium exchange capacity (CaEC) and potassium exchange capacity (KEC) are determined, after removal of organic matter and free iron oxides, by saturating the exchange complex with centrifuge washings of pH 7 acetate solutions of Ca or K, respectively. Excess salt in solutions remaining in contact with the soil after...
متن کاملPredicting cation exchange capacity from hygroscopic moisture in agricultural soils of Western Europe
Soil cation exchange capacity (CEC) depends on the extent and negative charge density of surfaces of soil mineral and organic components. Soil water sorption also depends on the extent of such surfaces, giving thus way to significant relationships between CEC and hygroscopic moisture (HM) in many soils. In this work, we explored whether CEC could be accurately predicted from HM in agricultural ...
متن کاملQuantitative Determination of Clinoptilolite in Soils by a Cation-exchange Capacity Method
-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 t. The CEC of the non-zeolitic exchange sites is determined by replacing the Nain these sites with tert-butylammonium ions. The tert-butylammoni...
متن کاملCation Exchange Capacity and Base Saturation
What are Cation Exchange and Cation Exchange Capacity? Soil clay minerals and organic matter tend to be negatively charged, thus attracting positively charged ions (cations) on their surfaces by electrostatic forces. As a result, the cations remain within the soil root zone and are not easily lost through leaching. The adsorbed cations may easily exchange with other cations in the soil solution...
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ژورنال
عنوان ژورنال: Agricultural and Food Science
سال: 1971
ISSN: 1795-1895,1459-6067
DOI: 10.23986/afsci.71796