What is the significance of the AgCl coating on the stability of Ag/AgCl quasi-reference electrodes (QREs) under gamma radiation?

Label:chem

Topic
The AgCl coating on Ag/AgCl QREs plays a critical role in determining the electrode's stability under gamma radiation. The coating's morphology and chemical composition can be affected by radiation, potentially impacting the electrode's performance.
Answer
The AgCl coating is essential for the stability of Ag/AgCl QREs under gamma radiation. The study demonstrates that the AgCl coating remains stable, with no significant changes in its chemical composition after 33 days of radiation exposure. The morphology of the AgCl crystals changes, with grain growth observed only in irradiated samples, indicating radiation-enhanced diffusion or defect generation. Despite these changes, the QREs maintain their stability, confirming the reliability of AgCl coatings for electrochemical measurements under gamma radiation.
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