Automated Analysis of Mercury in Samples
Author Information
Author(s): W. T. Corns, L. C. Ebdon, S. J. Hill, P. B. Stoekwell
Primary Institution: Plymouth Analytical Chemistry Research Unit, Department of Environmental Sciences, Polytechnic Southwest
Hypothesis
The flow-injection approach can extend the linear calibration range for mercury analysis.
Conclusion
The flow-injection method improves the sensitivity and reduces carry-over problems in mercury analysis.
Supporting Evidence
- Continuous-flow cold vapour-atomic fluorescence spectrometry is highly sensitive for mercury detection.
- The flow-injection method allows for higher calibration ranges with less sample dilution.
- Self-absorption can occur at high mercury concentrations, affecting measurement accuracy.
- Using small sample volumes minimizes matrix interference in mercury analysis.
Takeaway
This study shows a new way to measure mercury in samples that makes it easier and faster, especially when there's a lot of mercury.
Methodology
The study utilized continuous-flow and flow-injection techniques for cold vapour-atomic fluorescence spectrometry to analyze mercury concentrations.
Limitations
Samples with very high mercury concentrations can still cause self-absorption and carry-over issues.
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