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Scaling of Electrode-Electrolyte Interface Model Parameters In Phosphate Buffered Saline

机译:磷酸盐缓冲盐水中电极-电解质界面模型参数的缩放

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摘要

We report how the impedance presented by a platinum electrode scales with the concentration of phosphate buffered saline (PBS). We find that the constant phase element of the model scales with approximately the log of concentration, whereas the resistivity is inversely proportional. Using a novel DC measurement technique we show that the Faradaic response of a platinum electrode, and thus the safe exposure limit, does not scale with concentration below 900mV overpotential across a pair of electrodes. We compare objective measurements made in saline to those made in the spinal cavity of live sheep. We comment upon the appropriateness of using PBS as a substitute for living sheep.
机译:我们报告了铂电极呈现的阻抗如何随磷酸盐缓冲盐水(PBS)的浓度缩放。我们发现模型的恒定相位元素与浓度的对数成正比,而电阻率则成反比。使用新颖的直流测量技术,我们发现铂电极的法拉第响应以及安全暴露极限不会随着跨电极对的浓度低于900mV超电势而缩放。我们将在盐水中进行的客观测量与在活羊的脊髓腔中进行的客观测量进行比较。我们评论使用PBS代替活羊的适当性。

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