Ermittlung des Redoxpotentials (Eh-Wert) von Böden und Grundwässern aus dem zeitlichen Verlauf der Elektrodendepolarisation |
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| Authors: | Jürgen Bttcher Otto Strebel |
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| Institution: | Jürgen Böttcher,Otto Strebel |
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| Abstract: | Calculation of redox potential in soil and groundwater from the curve of the electrode depolarization An inherent problem with redox potential measurements in soil and groundwater is the initial drift of potential readings. This is caused by electrode depolarization. The depolarization kinetics corresponds to a first-order process, mathematically described by an e-function. Based on the depolarization kinetics a method was developed to calculate redox potentials (Eh-values) from only short time (= 10 min) measured depolarization curves. Besides the Eh-value this procedure gives the depolarization constant λ. The method was tested and verified by a number of depolarization measurements in soils and groundwater. |
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