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Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems

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Published on: July 4, 2011

A PVC-membrane bulk optode for gallium(III) ion determination.

Afsaneh Safavi¹, Marzieh Sadeghi

¹Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 71454, Iran.

|December 17, 2008

Summary

A new optical probe effectively detects gallium(III) ions using a specialized PVC membrane. This sensor changes color, offering a selective and rapid method for analyzing gallium in water samples.

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An Aptamer-based Sensor for Unchelated Gadolinium(III)

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Published on: January 9, 2017

Area of Science:

Analytical Chemistry
Materials Science

Background:

Gallium(III) ion detection is crucial for various applications.
Development of selective and sensitive chemical sensors is an ongoing research area.

Purpose of the Study:

To develop a novel optical probe for the selective detection of gallium(III) ions.
To characterize the performance of the developed probe for practical applications.

Main Methods:

Incorporation of 4-(p-nitrophenyl azo)-pyrocatechol (NAP) as an ionophore into a plasticized PVC membrane with tributylphosphate (TBP).
Colorimetric analysis of the sensing membrane's response to gallium(III) ions at pH 3.5.

Main Results:

The sensing membrane exhibited a distinct color change from yellow-brown to pink-brown in the presence of gallium(III) ions.
A linear detection range of 5-83µM and a limit of detection of 4µM were achieved.
The probe demonstrated a response time of 10-15 minutes and excellent selectivity for gallium determination.

Conclusions:

The developed optical probe is a sensitive and selective tool for gallium(III) ion analysis.
The probe shows potential for effective application in analyzing gallium content in water samples.