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Updated: Feb 16, 2026

Multi-analyte Biochip MAB Based on All-solid-state Ion-selective Electrodes ASSISE for Physiological Research
Published on: April 18, 2013
Potentiometric electrodes for total dissolved solids: Universal ion response from crosslinked polymer membranes
Ye Zhang1, Yu Cheng2, Dajing Yuan1
1Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, China.
Abstract:
Total dissolved solids (TDS) are a critical parameter in water quality assessment. Conductivity measurements are commonly used for TDS estimation but it is easily biased by factors such as temperature and ionic composition. Here, we introduce novel potentiometric all-crosslinked membrane electrodes for direct assessment of TDS in water samples. The ion-sensitive electrodes, fabricated using epoxy-amine and thiol-ene click polymerization, demonstrated high sensitivity to a range of common cations and anions covering a wide concentration range (0.1 - 100 mM). Experimental results showed an excellent linear correlation between the open circuit potential of the electrodes and logarithmic TDS in fresh water samples. The proposed membrane electrodes offered several advantages including lower cost, ease of operation, and rapid response. We believe that potentiometry based on the electrodes could become an alternative to traditional conductivity-based approaches, providing convenient and reliable TDS measurements in various water matrices.
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