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Ultrasound assisted microwave digestion
Smain Chemat1, Ahcene Lagha, Hamid Ait Amar
1Centre des Recherches Techniques et Scientifiques en Analyses Physico-chimiques, BP 248 Alger RP 16004 Alger, Algeria. s_chemat@hotmail.com
Ultrasonics Sonochemistry
|November 20, 2003
Summary
Simultaneous microwave and ultrasound irradiation offers a novel, faster method for sample digestion in chemical and food analysis. This technique significantly reduces digestion time for determining copper and total Kjeldahl nitrogen.
Area of Science:
- Analytical Chemistry
- Food Science
- Sample Preparation Technologies
Background:
- Traditional sample digestion methods can be time-consuming and energy-intensive.
- Efficient sample preparation is crucial for accurate chemical and food analysis.
Purpose of the Study:
- To introduce and evaluate a new technique combining microwave and ultrasound irradiation for sample digestion.
- To demonstrate the applicability of this method in analytical chemistry, specifically for food samples.
Main Methods:
- Simultaneous application of microwave and ultrasound energy for sample digestion.
- Analysis of solid and liquid samples.
- Determination of specific analytes including copper and total Kjeldahl nitrogen.
Main Results:
- Significant reduction in sample digestion time compared to conventional methods.
- Successful application for the determination of copper in edible oils.
- Effective for the determination of total Kjeldahl nitrogen.
Conclusions:
- Simultaneous microwave and ultrasound irradiation is an effective and rapid technique for sample digestion.
- This method is suitable for routine chemical and food analysis, offering time-saving benefits.