Application_of_Analytical_Chemistry_in_Forensic_Science

1. Application of Analytical Chemistry
in Forensic Science
• Presented by: [Your Name]
• Department of Chemistry
• [Your Institution]
• Date: June 2025

2. Introduction
• • Forensic science combines science and law
• • Analytical chemistry helps identify, quantify
substances
• • Provides critical evidence in crime scene
investigations

3. Objectives
• • Explore analytical techniques in forensic
science
• • Understand their roles in solving crimes
• • Emphasize accuracy and reliability of
evidence

4. Toxicology
• • Identifies toxins, drugs, poisons
• • Techniques: GC-MS, LC-MS, SPME
• • Detects substances in postmortem samples

5. Drug Analysis
• • Detects illicit and synthetic drugs
• • Techniques: UHPLC, DAD, HRMS
• • Identifies trace levels in biological samples

6. Trace Evidence
• • Includes hair, fibers, paint, soil
• • Techniques: MSP, EDX
• • Links suspects to crime scenes

7. Fire Debris & Explosives
• • Detects accelerants and residues
• • Techniques: SPME, Pyrolysis-GC-MS
• • Used in arson and bombing cases

8. DNA & Biochemical Analysis
• • Identifies individuals via DNA
• • Techniques: PCR, NGS, CE
• • Applied to biological crime scene evidence

9. Gunshot Residue (GSR)
• • Detects lead, barium, antimony
• • Techniques: AAS, SEM-EDX
• • Links suspects to firearms use

10. Alcohol & Volatiles
• • Used in DUI and poisoning cases
• • Techniques: GC, HSGC, Breathalyzers
• • Measures blood alcohol concentration

11. Controlled Substances
• • Identifies drugs and their metabolites
• • Techniques: LC-MS, GC-MS
• • Determines use patterns and exposure

12. Environmental Forensics
• • Investigates pollution and spills
• • Techniques: ICP-MS, GC-MS, HPLC
• • Identifies sources of contamination

13. Forensic Archaeology
• • Analyzes buried remains and evidence
• • Techniques: Isotope & DNA analysis
• • Used in mass disasters, war crimes

14. Summary of Techniques
• • GC-MS, LC-MS, SPME, PCR, NGS, ICP-MS
• • SEM, EDX, HSGC, MSP
• • Applied across various forensic fields

15. Conclusion
• • Analytical chemistry is vital in forensics
• • Enhances evidence precision and reliability
• • Supports justice through science

16. References
• Bishop et al., 2017
• Pratt, 2016
• Harrison et al., 2015
• Meyer et al., 2015
• Kintz et al., 2017
• Papanastasiou et al., 2018
• Calderón et al., 2019
• Butler, 2015
• Finkelstein et al., 2019