Luminol
In Season 6, Episode 7 of CSI: Crime Scene Investigation titled "A Bullet Runs Through It, Part 1," luminol is used to detect blood in a crime scene. The forensic team sprays luminol on a crime scene and discovers blood spatter patterns that help them piece together what happened.
Some chemical properties used to identify evidence in a crime scene include elemental composition, pH levels, oxidation states, and specific chemical reactions with reagents like luminol or bloodstain reagents. These properties help forensic analysts determine the presence of substances such as blood, drugs, explosives, or accelerants, aiding in the investigation and prosecution of criminal cases.
Luminol is a common reagent used at crime scenes to identify blood. When sprayed, it reacts with the iron in hemoglobin to produce a blue luminescence, making any bloodstains visible even if they are not easily seen with the naked eye.
Investigators may spray a crime scene with hydrochloric acid (HCl) before using luminol to help remove any potential contaminants or residues that could interfere with the reaction of luminol with blood. This ensures a clean surface for the luminol to detect any hidden blood traces effectively.
This would fall under the branch of analytical chemistry, which focuses on identifying and quantifying the chemical components present in a sample. In forensic science, analytical chemistry techniques are often used to analyze evidence such as blood, drugs, or trace materials found at a crime scene.
You can find more information on chemical cleaning of a crime scene at www.winsol.com/crime.htm. Another good website is www.TragicSolutions.com
someone who investigates a crime scene they dust for fingerprints test for blood look for evidence and everything else associated with crime
someone who investigates a crime scene they dust for fingerprints test for blood look for evidence and everything else associated with crime
Forensic scientists test blood at a crime scene using the chemicals Luminol (C8H7N3O2) and hydrogen Peroxide (H2O2). if blood is present when they use these chemicals, it will glow with a bluish color in the dark. I hope this helps.
Yes, blood can be considered direct evidence in a crime scene investigation because it can provide crucial information about the events that occurred, such as the presence of a victim or suspect at the scene.
Forensic scientists look for blood at a crime scene because it can provide evidence of the identity of the individuals involved, the type of weapon used, the sequence of events, and the location of the incident. Blood spatter patterns can also help recreate the crime scene and establish what occurred during the crime.
A piece of fingernail found at the crime scene
Yes
CSI (Crime Scene Investigation) agents take pieces of evidence from a crime scene (anything from clothes and undergarments or pictures to various weapons) and subject them to a variety of chemical, physical and analytical tests to see know the who's, what's, where's and why's of that crime scene.
Forensic technicians and crime scene investigators are responsible for collecting physical evidence, such as dried blood and fibers, at a crime scene. They follow strict protocols to properly document, collect, and preserve evidence for analysis in the laboratory.
He or she analizes the evidence found at a crime scene and tests blood fingerprints and stuff like that
it is colected on swabs and put in a sterile container