Calcium ion-selective electrodes and membrane for use therein

C - Chemistry – Metallurgy – 07 – F

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324/28.1, 260/46

C07F 9/09 (2006.01) C07F 9/12 (2006.01) C07F 9/6533 (2006.01) G01N 27/333 (2006.01) G01N 27/414 (2006.01)

Patent

CA 1126286

IMPROVED CALCIUM ION-SELECTIVE ELECTRODES AND MEMBRANE FOR USE THEREIN Abstract of the Disclosure A membrane for use in the determination of calcium ion concentration in an aqueous solution, the membrane being of the type comprising a calcium ion selective component and a carrier material. The membrane is characterized in that the calcium ion selective component is a compound having a formula (I) (I) Image wherein X and Y are independently selected from aryl, alkyl(aryl), alkenyl(aryl), alkynyl(aryl), alkyl, cycloalkyl, alkenyl, cycloalkenyl, or alkynyl radicals wherein the alkyl moiety of the alkyl(aryl) radical consists of 1-12 carbon atoms; each alkenyl and alkynyl moiety of the alkenyl(aryl) and alkynyl(aryl) radicals, respectively, consists of 2-12 carbon atoms; each aryl moiety consists of 6, 10, 12, or 14 carbon atoms; and each alkyl, cycloalkyl, alkenyl, cycloalkenyl, and alkynyl radical consists of 6 to 14 carbon atoms; and Z is an alkyl radical containing 1-12 carbon atoms; alkenyl and alkynyl radicals containing 4-12 carbon atoms; or cycloalkyl and cycloalkenyl radicals containing 6 to 12 carbon atoms. The membrane can be employed in an electrode system. A novel compound of formula I, supra, and a method for the manufacture thereof.

355023

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