Multichannel Potentiometer for Electrode Array Monitoring
Author Information
Author(s): Jarbas J. R. Rohwedder, Celio Pasquini, Ivo M. Raimundo Jr, M. Conceição, B. S. M. Montenegro, Alberto N. Araujo, Christina M. C. M. Couto
Primary Institution: Instituto de Química, UNICAMP
Hypothesis
Can a multichannel potentiometer improve the monitoring of electrode arrays in flow analysis?
Conclusion
The multichannel potentiometer allows for high-throughput measurements and improves the precision of potentiometric measurements.
Supporting Evidence
- The potentiometer can perform 270 determinations per hour.
- It allows for simultaneous measurements of multiple analytes.
- The system maintains a linear response for a wide concentration range.
- Detection limits for Cl, Ca2, and K were estimated at 3.1e-5, 3.0e-6, and 1.0e-5 mol l-1 respectively.
Takeaway
This study created a special tool that helps measure different chemicals quickly and accurately using multiple sensors at once.
Methodology
The potentiometer was tested with various electrode arrays and evaluated for its performance in flow injection and monosegmented flow analysis.
Limitations
The detection limits are defined by the chemical equilibrium rather than the instrument's electronic parameters.
Digital Object Identifier (DOI)
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