Abstract

A 3-electrode probe having a construction similar to the Clark type oxygen probe was developed, elaborated, and characterized as a dissolved hydrogen sensor. A thin plastic membrane allowing the hydrogen diffusion into the sensor prevents the interference of the determined solution composition. The sensors analytical characteristics such as LOD, sensitivity, and linear response concentration range were determined employing an electrochemical hydrogen generator producing dissolved hydrogen which concentrations were calculated by the Faraday’s law application. The sensor characterization results are presented and discussed together with the results obtained from its application for real time determination of the rate of hydrogen production in 10 mL reactors by the variety IR3 of the photosynthetic strain Rhodobacter Capsulatus.

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