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Updated: Mar 26, 2026
09:42
Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
Published on: August 7, 2016
9.2K
[Detecting Thallium in Water Samples using Dispersive Liquid Phase Microextraction-Graphite Furnace Atomic Absorption
Summary
A new method using solvent demulsification dispersive liquid phase microextraction (SD-DLPME) efficiently detects thallium in water. This simple and sensitive technique is suitable for analyzing thallium in water samples.
Area of Science:
- Analytical Chemistry
- Environmental Science
- Spectroscopy
Background:
- Thallium is a toxic heavy metal with significant environmental and health implications.
- Accurate detection of thallium in water samples is crucial for environmental monitoring and public health protection.
Purpose of the Study:
- To develop a novel and efficient method for thallium detection in water samples.
- To couple ion association reaction with solvent demulsification dispersive liquid phase microextraction (SD-DLPME) and graphite furnace atomic absorption spectroscopy (GFAAS).
Main Methods:
- Thallium was oxidized to Tl(III) and formed an ionic associated compound with trioctylamine.
- Solvent demulsification dispersive liquid phase microextraction (SD-DLPME) was employed using ethanol as the dispersive solvent.
- Analysis was performed using graphite furnace atomic absorption spectroscopy (GFAAS) with palladium colloid as a matrix modifier.
Main Results:
- The developed method exhibited a linear range of 0.05-2.0 µg/L.
- A low detection limit of 0.011 µg/L was achieved for thallium.
- High spiked recoveries (94.0%-103.0%) and a relative standard deviation of 9.9% were obtained for water samples.
Conclusions:
- The SD-DLPME method coupled with GFAAS is a simple, sensitive, and effective technique.
- This method is suitable for the batch analysis of thallium in various water samples.
- The approach offers a reliable tool for environmental thallium monitoring.
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