Automated System for Measuring Trace Metals
Author Information
Author(s): Anastasios Economou, Anastasios Voulgaropoulos
Primary Institution: Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki
Hypothesis
The development of an automated sequential-injection analysis system can improve the determination of trace metals using voltammetry.
Conclusion
The automated system effectively determined trace metals like copper, cadmium, lead, and zinc with high sensitivity.
Supporting Evidence
- The automated system allows unattended operation and can implement multiple-step sequences.
- The system was tested for the determination of various trace metals using square-wave voltammetry.
- Results showed good statistical agreement with atomic absorption spectrometry.
Takeaway
Scientists created a machine that can automatically test for tiny amounts of metals in solutions, making it easier and faster to get results.
Methodology
The study involved developing an automated sequential-injection analysis system using a peristaltic pump, a multiposition selector valve, and a home-made potentiostat to perform voltammetric measurements.
Limitations
The complexity and time overhead in plating, cleaning, and stripping of the mercury film may limit the widespread use of the system.
Digital Object Identifier (DOI)
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