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Multi-analyte Biochip MAB Based on All-solid-state Ion-selective Electrodes ASSISE for Physiological Research
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An All-Solid-State Silicate Ion-Selective Electrode Using PbSiO₃ as a Sensitive Membrane.

Rongrong Wu1,2,3, Xue-Gang Chen4, Chunhui Tao5,6,7

  • 1Ocean College, Zhejiang University, Zhoushan 316021, China. 18358087818@163.com.

Sensors (Basel, Switzerland)
|January 30, 2019
PubMed
Summary

Researchers developed a new all-solid-state silicate Ion-Selective Electrode (ISE) for in situ monitoring. This novel sensor offers fast response times and high selectivity for silicate detection in aqueous environments.

Keywords:
ion-selective electrodepH responsepotentiometricsensitivitysilicate

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Area of Science:

  • Electrochemistry
  • Environmental Monitoring
  • Materials Science

Background:

  • Ion-Selective Electrodes (ISEs) are crucial for in situ chemical concentration monitoring.
  • Traditional ISEs face limitations in high-pressure or deep-water applications.

Purpose of the Study:

  • To develop a novel all-solid-state silicate ISE.
  • To evaluate its performance for in situ silicate detection.

Main Methods:

  • Fabrication of an Ag/Pb/PbSiO₃ all-solid-state electrode.
  • Potentiometric measurements in various silicate solutions.
  • Testing selectivity against common interfering ions.

Main Results:

  • The electrode exhibited a slope of -31.34 mV/decade for silicate.
  • Linear response range from 10⁻⁵ M to 10⁻¹ M with response time < 5 s.
  • Demonstrated high selectivity for silicate over other anions in low-chloride environments.

Conclusions:

  • The all-solid-state silicate ISE is suitable for in situ monitoring in challenging aqueous environments.
  • Miniaturized design allows integration into multi-modal sensors.
  • Potential for accurate silicate determination in low-chloride conditions.