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A simple automatic system using the HP-85 microcomputer for programmed potentiometric titration
G Velinov1, N Todorov, S Karamphilov
1Faculty of Pharmacy, Medical Academy, 15 Ekz. Josif Street, Sofia, Bulgaria.
Talanta
|September 1, 1983
Summary
A new automatic titration system combines a digital pH-meter and automatic burette with a microcomputer. This flexible and affordable system enhances potentiometric titrations and direct potentiometry using ion-selective electrodes.
Area of Science:
- Analytical Chemistry
- Instrumentation
- Electrochemistry
Background:
- Automated systems are crucial for efficient and reproducible chemical analysis.
- Potentiometric titration and direct potentiometry require precise control of titrant addition and signal measurement.
- Existing automated titration systems can be complex and expensive.
Purpose of the Study:
- To propose a simple and cost-effective method for constructing an automatic titration system.
- To integrate a digital pH-meter and an automatic burette with a microcomputer for automated chemical analysis.
- To develop an interface for seamless communication between the computer and titration instruments.
Main Methods:
- The system utilizes an HP-85 microcomputer for control.
- An automatic burette is employed for precise titrant delivery.
- A digital pH-meter is used for real-time potential measurements.
- An interface unit based on the MOTOROLA 6800 microcontroller facilitates data exchange.
Main Results:
- A functional automatic titration system was successfully constructed.
- The developed interface unit enabled reliable communication between the microcomputer, pH-meter, and burette.
- The system demonstrated flexibility for various potentiometric applications.
Conclusions:
- The proposed system offers a simple, flexible, and affordable solution for automated potentiometric titrations.
- This approach can be widely applied in analytical laboratories for potentiometric titration and direct potentiometry.
- The use of an inexpensive interface unit makes advanced automation accessible.
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