July 2012
Intermediate to advanced
758 pages
17h 12m
English
Content preview from Pharmaceutical Analysis
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Chapter 3
Thermal Analysis
INTRODUCTION
Thermal methods are mainly used for the determination of physical or chemical change of substances as a function of temperature. Based on the change in the physical property, the thermal analytical methods named as different. They are as follows:
| Change in physical property | Name of the method |
|---|---|
| Mass | Thermogravimetry |
| Temperature | Differential thermal analysis |
| Heat flow (enthalpy) | Differential scanning calorimetry |
These methods are mainly used in the polymer analysis and solid state analysis.
Maxwell–Boltzmann distribution: This is for the molecular speeds for different molecules with different masses and different temperatures. The light molecules have the high molecular speed than the heavy molecules. ...
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