These data contain the details of the fabrication of the calcium ion-selective microelectrode (Ca2+-ISµEs) modified with poly(3,4-ethylenedioxythiophene)-poly(sodium 4-styrenesulfonate) (PEDOT(PSS)) as solid contact. The electrochemical impedance spectroscopy was carried out for the investigation of the resistance of the Ca2+-ISµEs. The thickness of the solid contact and the calcium ion-selective membrane was investigated by SEM. Potential-time curve of the electrodeposition of the PEDOT/PSS film onto the surface of the microelectrodes under the applied current of 0.5 µA for 200 s was recorded. The proposed Ca2+-ISµE was optimized through conditioning in different CaCl2 solutions ranged from 1.0 × 10-6 to 3.1 × 10-3 M for different time before use. The anti-fouling property of the Ca2+-ISµEs against proteins was investigated through taking BSA as the model protein. The developed Ca2+-ISµEs were used for the in vivo monitoring of the calcium ions in rat cerebrospinal fluid under the stimuli of the spinal cord transection in a living animal.
The data of an all-solid-state acupuncture needle based potentiometric microelectrode for in vivo monitoring of calcium ions in rat cerebrospinal fluid