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Published on: March 27, 2019
Determination of silicon by an indirect atomic-absorption method using carbon-rod electrothermal atomization
1Department of Chemistry, University of Technology, Loughborough, Leicestershire, England.
Talanta
|February 1, 1983
Summary
A new indirect atomic-absorption method determines trace silicon using electrothermal atomization. This technique efficiently extracts silicon as silicomolybdic acid, enabling accurate steel analysis.
Area of Science:
- Analytical Chemistry
- Materials Science
Background:
- Accurate determination of trace silicon is crucial for material quality control, particularly in steel manufacturing.
- Existing methods for trace silicon analysis can be complex and time-consuming.
Purpose of the Study:
- To develop a sensitive and reliable indirect method for determining trace silicon concentrations.
- To apply the developed method for the analysis of silicon in various steel samples.
Main Methods:
- Indirect atomic-absorption spectroscopy utilizing carbon-rod electrothermal atomization.
- Extraction of silicon as silicomolybdic acid into a diethyl ether/pentan-1-ol mixture.
- Use of citrate to prevent molybdate co-extraction and eliminate interfering acids.
Main Results:
- The developed method successfully determines trace amounts of silicon.
- The extraction and atomization procedure allows for sensitive molybdenum measurement, correlating to silicon content.
- The method was effectively applied to the analysis of silicon in several steel samples.
Conclusions:
- An effective indirect atomic-absorption method for trace silicon determination has been established.
- The procedure offers a viable analytical approach for silicon analysis in complex matrices like steel.
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