Forensic chemistry relies on different types of evidence to help solve crimes. Some of the most common types of evidence used in forensic chemistry include:
Physical evidence : Also known as real or indirect type of evidence consist of tangible articles such as bullets hair footprints etc.Few types of physical evidence are given below
- Trace evidence: This includes any small physical materials that are left behind at a crime scene, such as fibers, hair, and paint chips. Microscopes and chemical tests are used to analyse these types of evidences.
- Drug evidence: Forensic chemists analyze drugs seized by law enforcement to determine their identity, purity, and origin. This type of evidence can provide a link betwean suspects and drug crimes.
- Toxicology evidence: This include the analysis of bodily fluids, such as blood, urine, and saliva, to determine the presence of drugs or poisons. Toxicology evidence can be very usefll as it is used to determine if a victim was under the influence of a substance at the time of their death.
- Fire debris evidence: Forensic chemists can analyze the residue left behind after a fire to determine the cause and origin of the blaze. This type of evidence can be used to trace out of material which was involved in a crime.
- Tool mark evidence: This includes the analysis of impressions left by tools, such as hammers or screwdrivers, at a crime scene. Forensic chemists can use chemical tests to determine if the tool marks were made by a particular brand or type of tool.
- Firearms evidence: Forensic chemists can analyze different material to determine which type is used in a crime and potentially link it to a suspect.
corpus delicti evidence
Corpus delicti evidence refers to the evidence that establishes the existence of a crime or offense. This type of evidence is proves that a crime has been commited before the court can convict someone of committing that crime. Before the actual investigation can be initiated ther must be sufficient prove that a crime has taken place. For example Dead body broken window
Miscellaneous Evidence
This type of evidence is either subjective , objective and may not always be admissible in court of law.For example voice analysis ,narco analysis etc.