Examination of clothing and preservation of viscera for chemical analysis in medico-legal investigations
Methods of examining clothing for forensic evidence, including bloodstains, fibers, and gunpowder residue
This blog post explores forensic methodologies for examining clothing and preserving viscera in medico-legal investigations, focusing on bloodstains, fibers, gunpowder residue, and toxicological preservation techniques.
Examination of Clothing and Preservation of Viscera for Chemical Analysis in Medico-Legal Investigations
Introduction
Forensic medicine plays a crucial role in investigating crimes by examining physical evidence. One important aspect is the analysis of clothing and viscera for chemical evaluation.
Methods of Examining Clothing for Forensic Evidence
Detection of Bloodstains
Bloodstains are identified using chemical tests like the Kastle-Meyer test and luminol spray.
Analysis of Fibers
Fiber comparison techniques, including microscopic analysis and spectrophotometry, help establish connections between suspects and crime scenes.
Gunpowder Residue Examination
Gunshot residue (GSR) is detected using scanning electron microscopy (SEM) and chemical tests such as the sodium rhodizonate test.
Preservation of Viscera for Toxicological Examination
Proper preservation of internal organs, such as the liver and stomach, is critical for chemical analysis in cases of poisoning.
Preservation Techniques
- Formalin fixation for histopathological study
- Refrigeration for toxicological examination
- Sealing in sterile containers to prevent contamination
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