A Novel High-Performance Continuous Flow Analyser
Author Information
Author(s): D.J. Malcolme-Lawes, C. Pasquini
Primary Institution: Centrefor Research in Analytical Chemistry and Instrumentation, King's College London
Conclusion
The new analyser demonstrates improved sensitivity and precision for determining Cr(VI) and NH4+ in water samples compared to traditional methods.
Supporting Evidence
- The analyser achieved a detection limit of 0.010 ppm for Cr(VI) and 0.007 ppm for NH4+.
- Reagent consumption was significantly lower than that of conventional methods.
- The system can process up to 80 samples per hour, which is four times faster than some traditional methods.
Takeaway
This study describes a new machine that can quickly and accurately test water for certain chemicals using less liquid than older machines.
Methodology
The analyser uses gas pressure to drive liquid flows and computer-controlled valves for precise mixing of samples and reagents.
Limitations
The sensitivity of the new method is lower than that of some traditional methods, and the system requires careful handling of reagents.
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