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[Computer-aided differential thermal analysis of drugs]
1Fachbereich Pharmazie der Ernst-Moritz-Arndt-Universität Greifswald.
Die Pharmazie
|July 1, 1990
Summary
A new computer system enhances purity estimation using Differential Thermal Analysis (DTA) by transforming DTA curves into process-power-curves. This improves accuracy and speed for materials analysis.
Area of Science:
- Materials Science
- Analytical Chemistry
- Chemical Engineering
Context:
- Traditional Differential Thermal Analysis (DTA) systems often have high time constants, limiting real-time data acquisition and analysis.
- Accurate purity estimation is crucial for material characterization and quality control.
- Existing methods for analyzing DTA data can be time-consuming and less precise.
Purpose:
- To develop and implement an open-loop, on-line computer system for enhanced data acquisition and utilization with DTA apparatus.
- To improve the accuracy and efficiency of purity estimation, particularly for materials analyzed using DTA.
- To adapt the modified Van't Hoff equation for use with DTA curves by transforming them into process-power-curves.
Summary:
- A novel system integrates computer-aided data acquisition and software for DTA analysis, featuring thermometric and calorimetric calibration.
- The system transforms DTA curves into process-power-curves, enabling the application of a modified Van't Hoff equation for enhanced purity estimation.
- Techniques such as baseline correction, averaging of curves, and zooming are employed for improved optical comparison and analysis.
Impact:
- Enables higher quality, faster, and more exact utilization of DTA data.
- Facilitates accurate purity estimations even with DTA apparatus possessing high time constants, comparable to results from Differential Scanning Calorimetry (DSC).
- Provides powerful tools for baseline correction and curve analysis, leading to more reliable material characterization.