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Debye Length in Multivalent Electrolyte Solutions

Kohonen, Mika; Karaman, Marilyn; Pashley, Richard


We present the results of direct force measurements between charged surfaces in solutions of multivalent electrolytes (MgSO4, K4Fe(CN)6, and Th(NO3)4). For surface separations greater than approximately 3 nm the measured forces between the surfaces agree, within experimental uncertainty, with the predictions of the Derjaguin-Landau-Verwey-Overbeek theory of colloidal interactions. In particular, we find that various proposed corrections to the electrostatic screening lengths in solutions of...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Langmuir
DOI: 10.1021/la991621c


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