Which electrode is used to measure potassium (K+)?

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Multiple Choice

Which electrode is used to measure potassium (K+)?

Potassium-selective measurements rely on an electrode that contains a membrane with a selective carrier (ionophore) for K+. This carrier binds or interacts with potassium ions, and the resulting change in ion activity within the membrane is transduced into a voltage that the meter reads, giving a signal that tracks potassium concentration. A vancomycin-based liquid polymer membrane is designed to provide that selective recognition for potassium, enabling the sensor to respond specifically to K+. Other options describe electrodes aimed at hydrogen ions (pH), general solid-state membranes, or gas sensing, which do not provide the targeted K+ recognition needed for accurate potassium measurement. So this membrane design aligns with how potassium-selective electrodes are constructed and function.

Potassium-selective measurements rely on an electrode that contains a membrane with a selective carrier (ionophore) for K+. This carrier binds or interacts with potassium ions, and the resulting change in ion activity within the membrane is transduced into a voltage that the meter reads, giving a signal that tracks potassium concentration. A vancomycin-based liquid polymer membrane is designed to provide that selective recognition for potassium, enabling the sensor to respond specifically to K+. Other options describe electrodes aimed at hydrogen ions (pH), general solid-state membranes, or gas sensing, which do not provide the targeted K+ recognition needed for accurate potassium measurement. So this membrane design aligns with how potassium-selective electrodes are constructed and function.

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