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Electret-thermal analysis of blood
L S Pinchuk1, V A Goldade, G M Sessler
1V.A. Belyi Metal-Polymer Research Institute, National Academy of Sciences of Belarus, Gomel, Belarus.
Medical Engineering & Physics
|June 8, 2002
Summary
Thermally stimulated discharge (TSD) analysis reveals distinct thermal peaks in human blood, linked to hydrate shells, protein denaturation, and a blood group-dependent phase transition. This method shows potential for simple, informative biological diagnostics.
Area of Science:
- Biophysics
- Materials Science
- Biochemistry
Background:
- Charged dielectrics analysis using Thermally Stimulated Discharge (TSD) is a recognized technique.
- Human blood exhibits complex dielectric properties influenced by its biological components.
Purpose of the Study:
- To investigate the dielectric properties of human blood using the TSD method.
- To correlate TSD spectral features with specific biological processes in blood.
- To explore the potential of TSD as a diagnostic tool for biological systems.
Main Methods:
- Application of the Thermally Stimulated Discharge (TSD) method to human blood samples.
- Analysis of TSD spectra above room temperature to identify characteristic peaks.
- Correlation of peak temperatures and intensities with blood components and phase transitions.
Main Results:
- Above-room-temperature TSD spectra of blood display three distinct peaks.
- Low-temperature peak (40-50°C) attributed to hydrate shell destruction.
- Mid-temperature peak (70-90°C) linked to blood protein denaturation.
- High-temperature peak (105-120°C) associated with a blood phase transition and dry film formation.
- The high-temperature peak's position is dependent on the individual's blood group.
- A spontaneous "quasi-electret effect" in blood is suggested to relate to biochemical processes.
Conclusions:
- The TSD method provides insights into the thermal behavior of blood components and phase transitions.
- Blood group-specific variations in TSD spectra suggest a link between dielectric properties and blood group.
- The TSD technique offers a simple and informative approach for potential biological and medical diagnostics.
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