Calcium ion-selective electrodes and membrane for use therein
First Claim
1. A membrane for use in the determination of calcium ion concentration in an aqueous solution, said membrane being of the type comprising a calcium ion selective component and a carrier material, characterized in that said calcium ion selective component is a compound having a formula ##STR7## wherein X and Y are selected from a group consisting of aryl, alkyl(aryl) alkenyl, cycloalkenyl, and alkynyl radicals wherein said alkyl moiety of said alkyl(aryl) radical consists of 1-12 carbon atoms;
- each alkenyl and alkynyl moiety of said 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 selected from a group consisting of alkyl radicals containing 1-12 carbon atoms;
alkenyl and alkynyl radicals containing 4-12 carbon atoms; and
cycloalkyl and cycloalkenyl radicals containing 6 to 12 carbon atoms.
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Abstract
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) ##STR1## wherein X and Y are independently selected from the group consisting of aryl, alkyl(aryl), alkenyl(aryl), alkynyl(aryl), alkyl, cycloalkyl, alkenyl, cycloalkenyl, and alkynyl radicals wherein said alkyl moiety of said alkyl(aryl) radical consists of 1-12 carbon atoms; each alkenyl and alkynyl moiety of said 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 selected from a group consisting of alkyl radicals containing 1-12 carbon atoms; alkenyl and alkynyl radicals containing 4-12 carbon atoms; and cycloalkyl and cycloalkenyl radicals containing 6 to 12 carbom atoms.
The membrane can be employed in an electrode system.
A novel compound of formula I, supra, and a method for the manufacture thereof.
17 Citations
75 Claims
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1. A membrane for use in the determination of calcium ion concentration in an aqueous solution, said membrane being of the type comprising a calcium ion selective component and a carrier material, characterized in that said calcium ion selective component is a compound having a formula ##STR7## wherein X and Y are selected from a group consisting of aryl, alkyl(aryl) alkenyl, cycloalkenyl, and alkynyl radicals wherein said alkyl moiety of said alkyl(aryl) radical consists of 1-12 carbon atoms;
- each alkenyl and alkynyl moiety of said 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; andZ is selected from a group consisting of alkyl radicals containing 1-12 carbon atoms;
alkenyl and alkynyl radicals containing 4-12 carbon atoms; and
cycloalkyl and cycloalkenyl radicals containing 6 to 12 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
- each alkenyl and alkynyl moiety of said alkenyl(aryl) and alkynyl(aryl) radicals, respectively, consists of 2-12 carbon atoms;
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31. The membrane of claim 31 wherein said first layer comprises from about 14.9 to about 25 weight percent of said adhesive, lipophilic-hydrophobic polymer from about 74.5 to about 85 weight percent of said lipophilic-hydrophobic plasticizer, and from about 0.1 to about 0.5 weight percent of said calcium selective component;
- and said second layer comprises about 42.5 weight percent of said polyvinyl chloride homopolymer, about 55 weight percent of said lipophilic-hydrophobic plasticizer, and about 2.5 weight percent of said calcium selective component.
- View Dependent Claims (32, 33, 34)
Specification