Sodium-selective PVC membrane electrodes based on bis(12-crowns-4)s
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Add time:08/27/2019 Source:sciencedirect.com
Sodium-selective PVC membrane electrodes based on newly synthesized bis(crown ether)s containing 12-crown-4 moities were prepared using o-nitrophenyloctylether as a plasticizer of the PVC membrane. The selectively coefficients for alkali metal ions kNaM, were sufficiently small, and markedly depend on the chain lenght and structure of bis(12-crown-4)s. These electrodes show excellent properties, and the electrode response was stable in a wide pH range.
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