Depth profiles of potassium and its isotope ratio (K-40/K) in several forest soils

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Depth profiles potassium and its isotope ratio (K-40/K) were investigated in several forest soils from different geological and climatic backgrounds. The ratio was found not to be constant (0.0117%) but varied appreciably from 0.0085 to 0.0167% among different soils. Possible factors affecting variability of K-40/K values were considered by a multivariate factor analysis which suggested that aqueous parameters like humidity and pH might be a controlling factor in the surface soils. The amount (and probably chemical forms) of iron oxide may be another one influencing K-40/K values in mineral components at deeper portions.
Akadémiai Kiadó, co-published with Springer Science+Business Media B.V.の論文