Скачать или смотреть Cobalt Based Solid State Phosphate Sensor with Submicromolar Detection Range

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Title: Cobalt Based Solid State Phosphate Sensor with Submicromolar Detection Range

Author: Vinay Patel, P. Ravi Selvaganapathy

Affiliation: McMaster University, Canada



Abstract: Increase in phosphate concentration can result in algal bloom in the water bodies. Cobalt is a widely investigated solid-state electrode used for phosphate measurement. But the commercial success of the electrode is limited due to high limit of detection (greater than 10-6M). This study demonstrates a pretreatment protocol to enable cobalt electrodes for phosphate measurements at sub micromolar concentrations (less than 10-6M). The two-step current pretreatment enhanced the sensitivity of the sensor from 3.1mV/decade (control) to 15.2mV/decade (with current pretreatment). Except sulphate, no significant interference was observed with common anions (nitrate, chloride, and acetate).

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