The preparation and performance of a new Ca-selective electrode based on a Nafon® membrane modified by means of the new ionic carrier N-ethyl-N-(2-trimethylammoniumethyl)-N′-heptyl-N′-methyl-suc cinamide are described. This electrode is characterized by a wide linear range extending down to pCa≥5, acceptable selectivity towards alkaline-metal cations, a nearly equal response to Mg2+ ion (which makes it suitable for water hardness determinations) and an extremely long in-service lifetime.
A New, Long-lived Ca-Selective Electrode / S. Rondinini, P.R. Mussini, A. Vertova, A. Bortoluzzi, L. Bono, P. Longhi. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - 23:1(1995), pp. 27-33. [10.1016/0925-4005(94)01514-I]
A New, Long-lived Ca-Selective Electrode
S. Rondinini
Primo
;P.R. MussiniSecondo
;A. Vertova;P. LonghiUltimo
1995
Abstract
The preparation and performance of a new Ca-selective electrode based on a Nafon® membrane modified by means of the new ionic carrier N-ethyl-N-(2-trimethylammoniumethyl)-N′-heptyl-N′-methyl-suc cinamide are described. This electrode is characterized by a wide linear range extending down to pCa≥5, acceptable selectivity towards alkaline-metal cations, a nearly equal response to Mg2+ ion (which makes it suitable for water hardness determinations) and an extremely long in-service lifetime.
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