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Related Experiment Video

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Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

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Published on: August 7, 2016

Flow injection analysis for residual chlorine using Pb(II) ion-selective electrode detector.

A Sakai¹, A Hemmi, H Hachiya

¹R&D Division, DKK Corporation, Kitamachi, Kichijoji, Musashino 180, Japan.

|October 31, 2008

Summary

This summary is machine-generated.

A new flow injection analysis (FIA) method uses a lead (Pb(II)) ion-selective electrode to detect residual chlorine in tap water. This simple, accurate method offers a reliable alternative for water quality monitoring.

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Area of Science:

Analytical Chemistry
Environmental Science

Background:

Accurate measurement of residual chlorine in tap water is crucial for ensuring water safety and disinfection efficacy.
Conventional methods for residual chlorine analysis can be time-consuming or require specialized reagents.

Purpose of the Study:

To develop a simple and efficient flow injection analysis (FIA) system for the determination of residual chlorine in tap water.
To utilize a lead (Pb(II)) ion-selective electrode (ISE) as a detector for residual chlorine.

Main Methods:

A flow injection analysis (FIA) system was designed, incorporating a peristaltic pump, a Pb(II)-ISE detector, a millivolt meter, and a recorder.
The system's response to varying concentrations of residual chlorine was calibrated.
Method validation involved assessing linearity, precision, and comparison with a standard colorimetric method.

Main Results:

A linear working curve was established for residual chlorine concentrations ranging from 0.1 to 1 mg/L, demonstrating good quantitative capability.
The developed FIA method exhibited high precision, with a relative standard deviation of 2% for repeated measurements of a 0.2 mg/L sample.
A strong correlation (R=0.967) was observed when comparing the FIA results with the conventional o-tolidine colorimetric method, indicating good agreement.

Conclusions:

The developed Pb(II)-ISE based FIA system provides a simple, rapid, and accurate method for residual chlorine determination in tap water.
This method offers a viable alternative to traditional techniques, potentially improving routine water quality monitoring.
The system's performance characteristics suggest its suitability for practical application in water analysis laboratories.