We report here a simple approach that allows for rapid mapping of raw voltage readings to concentrations for parts-per-billion level air quality electrochemical sensors. The key step is the introduction of an auxiliary sensor and then covering it with a thin Nafion membrane, one that is well-known for its both highly efficient and selective permeation of water vapor. This sensor captures any signal that is induced by changes of relative humidity, and such a signal can then be used to rapidly correct for drifts of the main sensor which sees both the target gas and the ambient water vapor. The whole process is entirely based on first principles, preserves physical clarity, is very amenable for implementation by routine sensor users, and delivers data that compare favorably with those from reference instruments. We also suggest that this double-sensor setup can be further condensed into one sensor in which one of the electrodes is coated by Nafion and exposed to ambient air in the same way as the normal sensing electrode.

中文翻译：

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空气质量电化学气体传感器的第一性原理算法。

我们在这里报告了一种简单的方法，该方法可以将原始电压读数快速映射到十亿分之一的空气质量电化学传感器的浓度。关键步骤是引入辅助传感器，然后用一层薄的Nafion膜覆盖，该膜以其高效且选择性的水蒸气渗透而闻名。该传感器捕获由相对湿度变化引起的任何信号，然后可以使用该信号快速校正主传感器的漂移，该漂移既可以看到目标气体，也可以看到周围的水蒸气。整个过程完全基于第一原理，保持物理清晰度，非常适合常规传感器用户实施，并且所提供的数据可与参考仪器的数据相媲美。