A Five-Electrode Contactless Conductivity Detector Based on a Sandwiched Microfluidic Chip for Miniaturized Ion Chromatography
Kai Chen, Ruirong Zhang, Mengbo Wang, Bo Wang, Shaoshuai Wang, Haitao Zhao · 2025
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Description
Kai Chen and co-authors build, in a 2025 study, a chip-sized detector for measuring ions in water samples. Ion chromatography sorts dissolved ions and reads them by conductivity; shrinking the reader is key to shrinking the whole system. Their detector senses conductivity without touching the liquid, using five electrodes laid into a printed circuit board inside a layered chip.
One electrode is a shield that curbs stray leakage current, which raises the signal at the outlet and sharpens sensitivity. Building the electrodes into a circuit board also eases making them and lengthens their life. Fitted to a commercial system, the chip separated and read chloride, nitrate, and sulfate within twenty-five minutes. Detection limits sat under one part per million for all three, and errors stayed within about two percent.
Catalog record
| CREATOR | Kai Chen, Ruirong Zhang, Mengbo Wang, Bo Wang, Shaoshuai Wang, Haitao Zhao |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 37 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |