Forensic chemistry uses chemical analysis techniques to identify and quantify known and unknown substances found at crime scenes to assist with criminal investigations. Chemists can help identify unknown materials and analyze drugs and other controlled substances, often testifying as expert witnesses in court. The analysis of evidence aims to preserve, conserve, and test samples through schemes utilizing presumptive and confirmatory chemical tests to identify trace evidence like blood, fluids, and other materials.

1. Forensic Chemistry
Catherine Anne L. Qiu
5th yr. Dentistry

2. FORENSIC CHEMISTRY
-Use of chemical analysis as it applies to the law
-Differs from toxicology in that it analyzes non-
biological samples
-Uses Chemical techniques to identify and quantify
traces of known and unknown substances and trace
their origins for the purposes of criminal investigations

3. What can a Chemist do?
-Assist in the identification of unknown materials found
at a crime scene.
-Specialists in this field have a wide array of methods
and instruments to help identify unknown substances.
-Analyze drugs/controlled substances taken from scenes
and people in order to identify and sometimes quantify
these materials.
-commonly testify in court as expert witnesses
regarding their findings.

4. Contents
• Types of Forensic Chemical Evidence
-Controlled substances and other drugs
-Blood and other body fluids
-Trace evidence
-Pattern evidence
• Theory and Purpose of Chemical Analysis of
Evidence

5. • Schemes of Chemical Analysis
-Evidence must be preserved
-Evidence must be conserved
-Testing
• Types of Forensic Chemical Test
-Presumptive chemical tests
-Confirmatory chemical tests