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Updated: Jun 28, 2026

Dynamic Electrochemical Measurement of Chloride Ions
07:32

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Published on: February 5, 2016

Porous layer flow injection analysis with potentiometric chloride detection.

Q Yin1, C O Huber

  • 1Department of Chemistry, Laboratory for Surface Studies, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA.

Talanta
|October 1, 1994
PubMed
Summary
This summary is machine-generated.

This study presents a novel paper-based analytical device for continuous flow analysis. The system enables high-throughput potentiometric detection of chloride at a constant flow rate, offering a simple and efficient method for sample analysis.

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Continuous flow analysis is crucial for high-throughput sample testing.
  • Developing cost-effective and simple analytical systems remains a challenge.

Purpose of the Study:

  • To develop a paper-based continuous flow system for potentiometric detection.
  • To investigate the control of dispersion and flow rate in a paper-based device.
  • To determine the analytical performance for chloride detection.

Main Methods:

  • A porous paper stream was utilized for continuous flow, propelled by a downstream porous paper pump.
  • Microliter sample droplets were injected onto the paper surface.
  • Dispersion was controlled by adjusting the injection position.
  • Potentiometric detection was employed for chloride ion analysis.

Main Results:

  • A constant flow rate was achieved using the paper-based pump system.
  • The system demonstrated effective control over sample dispersion.
  • Potentiometric detection of chloride ions was successful over a wide concentration range (0.1 mM to 1M).
  • The device achieved a throughput of 50 or more samples per hour.

Conclusions:

  • The developed paper-based continuous flow system offers a simple, low-cost, and efficient platform for analytical measurements.
  • This technology has potential for high-throughput analysis in various applications.
  • The system demonstrates robust performance for potentiometric detection of chloride ions.