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A rapid method for determining tin and molybdenum in geological samples by flame atomic-absorption spectroscopy
1U.S. Geological Survey, Box 25046, Denver Fedral Center, MS 973 Denver, Colorado 80225, USA.
Talanta
|October 1, 1985
Summary
This study introduces a new analytical method for detecting tin and molybdenum using lithium metaborate fusion and flame analysis. The method offers low detection limits, making it suitable for routine sample analysis.
Area of Science:
- Analytical Chemistry
- Materials Science
Background:
- Accurate quantification of trace metals like tin and molybdenum is crucial in various industrial and environmental applications.
- Existing analytical methods may lack the sensitivity or throughput required for large-scale sample analysis.
Purpose of the Study:
- To develop and validate a novel analytical method for the simultaneous determination of tin and molybdenum.
- To establish the method's performance characteristics, including limits of detection and sample throughput.
Main Methods:
- Lithium metaborate fusion of samples.
- Acid dissolution of the fusion bead.
- Solvent extraction using trioctylphosphine oxide in methyl isobutyl ketone.
- Analysis via nitrous oxide-acetylene flame atomic absorption spectrometry.
Main Results:
- Achieved a limit of detection of 1.0 ppm for tin.
- Achieved a limit of detection of 0.5 ppm for molybdenum.
- Demonstrated a sample throughput of approximately 50 samples per day.
Conclusions:
- The proposed method provides a sensitive and efficient approach for analyzing tin and molybdenum.
- This technique is well-suited for routine analysis requiring high sample throughput and low detection limits.
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