Document Type

Article

Publication Date

1-1-1990

Abstract

Different methods of determining quantity-intensity (Q/I) parameters with ion-selective electrodes (ISEs) were developed and evaluated with suspensions of three Iowa soils and a successive-additions method of varying the added K+. The ISE methods, which were categorized on the basis of the electrochemical cell involved, were tested for their applicability to soil suspensions. Specifically, single-ISE, dual-ISE, and triple-ISE methods were compared to ascertain the best means of determining the ΔK (gain or loss of dissolved K) and CR [concentration ratio: CK/(CCa+Mg)1/2] terms of the Q/I relationships. It was concluded that using the triple-ISE method offers the best means of carrying out simple, rapid, and liquid junction free determinations. -from Authors

Publication Source (Journal or Book title)

Canadian Journal of Soil Science

First Page

693

Last Page

704

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