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A Comparison of Glass and Quinhydrone Electrodes for Determining the pH of Some Iowa Soils: I. A Comparison of Different types of Glass Electrodes 1
Author(s) -
Dean Harold L.,
Walker R. H.
Publication year - 1935
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1935.00021962002700060004x
Subject(s) - citation , glass electrode , soil water , library science , chemistry , mathematics , computer science , electrode , reference electrode , environmental science , soil science , electrolyte
D URING the past decade the quinhydrone electrode has been used extensively for determining the hydrogen-ion concentration of soils. It is considered to be well adapted to the study of reaction in soils because of its simplicity and ease of operation, and also because of its accuracy in most soils. As is well known, however, its use is restricted to soils having a reaction more acid than pH 8.o ̄ to 8.5, and to soils containing no oxidizing or reducing substances in sufficient concentration to interfere with the normal dissociation of the quinhydrone. In recent years a number of investigators, notably Karraker (14), 3