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Atomic Absorption Spectroscopy: Atomization Methods

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...

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Related Experiment Video

Updated: Jun 3, 2026

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

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[Hydrophobic ionic liquid extraction-flame atomic absorption spectrophotometry for separation/analysis trace gold].

Jun Wu¹, Hao Fu, Bin-Jian Li

¹School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China. junwu@yzu.edu.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|March 25, 2011

Summary

This study synthesized 1-butyl-3-methylimidazolium hexafluorophosphate ([C4mim][PF6]) ionic liquid for trace gold preconcentration. The developed method offers a sensitive and reliable approach for gold determination in water samples.

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Asymmetrical Flow Field-Flow Fractionation for Sizing of Gold Nanoparticles in Suspension

Asymmetrical Flow Field-Flow Fractionation for Sizing of Gold Nanoparticles in Suspension

Published on: September 11, 2020

Area of Science:

Analytical Chemistry
Materials Science

Context:

Ionic liquids are emerging as versatile solvents in analytical chemistry.
Efficient preconcentration techniques are crucial for detecting trace elements.

Purpose:

To synthesize and characterize the hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([C4mim][PF6]).
To develop a method for the preconcentration and determination of trace gold using [C4mim][PF6].

Summary:

The ionic liquid [C4mim][PF6] was synthesized from 1-methylimidazole, butylbromide, and ammonium hexafluorophosphate.
The preconcentration method demonstrated a linear response for gold concentrations from 0.40-16.00 µg/mL.
A low detection limit of 0.072 µg/mL was achieved, with a correlation coefficient of 0.9991.

Impact:

The developed method provides a sensitive and reliable technique for trace gold analysis.
Successful application to real water samples demonstrates practical utility.
Highlights the potential of hydrophobic ionic liquids in environmental trace metal determination.