Abstract

A photocured lithium ion-selective electrode, based on the ionophore N, N-dicyclohexyl- N′, N′-diisobutyl- cis-cyclohexane-1, 2-dicarboxamide (ETH 1810), was developed and evaluated. The robust nature of the photocured membrane made it ideally suitable for measurements in flow injection potentiometry within a linear range 0.1–10 −3 M, detection limit of 5 × 10 −4 M, and sample throughput of 150 h −1. The electrode was used successfully to determine lithium levels in pharmaceutical lithium carbonate tablets.

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