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Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies
Published on: July 1, 2016
Solid-liquid extraction of copper from slurried samples using high intensity probe sonication for electrothermal
J L Capelo1, A V Filgueiras, I Lavilla
1Departamento de Quimica Analitica y Alimentaria, Facultad de Ciencias (Quimica), Universidad de Vigo, As Lagoas-Marcosende s/n., Vigo, Spain.
Talanta
|October 31, 2008
Summary
A new, rapid electrothermal atomic absorption spectrometry method efficiently determines copper in biological samples. This optimized sonication-assisted slurry technique offers accurate copper quantification with high recovery rates.
Area of Science:
- Analytical Chemistry
- Environmental Science
Background:
- Accurate copper determination is crucial for biological and environmental monitoring.
- Traditional methods for copper analysis in biological matrices can be time-consuming and complex.
Purpose of the Study:
- To develop a fast and simple method for copper determination in biological samples using electrothermal atomic absorption spectrometry (ETAAS).
- To optimize sonication-assisted slurry preparation for efficient copper extraction.
Main Methods:
- Solid biological samples were slurried in an acidic diluent and sonicated.
- Optimization of sonication time, ultrasound amplitude, acid concentration, and particle size (<50 microm) was performed.
- Copper determination was carried out using electrothermal atomic absorption spectrometry.
Main Results:
- Quantitative copper recovery was achieved in mussel tissue, dogfish muscle, and aquatic plants using optimized conditions.
- The method demonstrated a limit of detection (LOD) of 0.16 microg g(-1) for copper.
- High precision and homogeneity were observed at a 10 mg sample mass level.
Conclusions:
- The proposed sonication-assisted slurry ETAAS method is fast, simple, and effective for copper determination in diverse biological samples.
- This technique offers advantages over conventional slurry sampling, including improved precision and reduced matrix effects.
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