Trace Evidence

Topics: Bloodstain pattern analysis, Forensic evidence, Locard's exchange principle Pages: 4 (1605 words) Published: May 16, 2005
Crime scenes are known to have many clues left behind. The obvious would be a the body or bodies, clothing, and sometimes even the murder weapon. While these are great way to solve a case there's another kind of evidence; trace evidence. Trace evidence are small pieces of evidence that are laying around a crime scene. There are many types of trace evidence some of them include metal filings, plastic fragments, gunshot residue, glass fragments, feathers, food stains, building materials, lubricants, fingernail scrapings, pollens and spores, cosmetics, chemicals, paper fibers and sawdust, human and animal hairs, plant and vegetable fibers, blood and other body fluids, asphalt or tar, vegetable fats and oils, dusts and other airborne particles, insulation, textile fibers, soot, soils and mineral grains, and explosive residues. Although these are the most common found elements, they are not the only ones. The Trace Evidence Unit is known to examine the largest variety of evidence types and used the biggest range of analytical methods of any unit. materials are compared with standards or knowns samples to determine whether or not they share any common characteristics. In this paper I will discuss the different kinds of trace evidence and how crime scene investigaros use it to solve cases and convict criminal. Trace evidence was first discovered by Edmond Locard. Edmond Locard was born in 1877, and founded the Institute of Lyon's Institute of Criminalistics. He is also known for advancing the science of fingerprints. In 1910 he was authorized to start a small forensic laboratory in the Palais de Justice which he directed until 1951.While there he worked on criminal identification methods including poroscopy- the microscopic examination of fingerprints; analyses of body fluids, hair and skin; and graphometry or handwriting analysis. He is the man responsible for coming up with the theory that when two objects come in contact with each other they leave some kind of...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • trace evidence Essay
  • Trace Evidence Used to Solve Cases Essay
  • Trace Evidence Essay
  • Trace Evidence Essay
  • Match and Evidence Essay
  • That Which Can Be Asserted Without Evidence Can Be Dismissed Without Evidence (Chirstopher Hitchens). Do You Agree? Essay
  • Homicide Investigation Collecting Evidence Essay
  • Criminal Evidence Essay

Become a StudyMode Member

Sign Up - It's Free