Forensic Chemistry

Forensic chemistry applies the principles and techniques of chemistry to the analysis of non-biological evidence encountered in criminal cases. It covers a wide range of materials including explosives, petroleum products, paints, fibres, glass, soil, narcotic drugs and trace evidence.

Forensic chemists employ instrumental techniques such as spectroscopy, chromatography, microscopy and X-ray diffraction to identify and compare substances, helping to link a suspect, victim and scene through the transfer of trace materials.

Trace Evidence

According to Locard's exchange principle, every contact leaves a trace. Forensic chemists examine trace evidence such as paint, glass fragments, fibres, soil and gunshot residue to establish associations between people, objects and places.

Analysis of Explosives & Accelerants

In cases of arson and bomb blasts, chemists analyse residues to identify accelerants and explosive compounds using gas chromatography, mass spectrometry and ion chromatography, helping to determine the cause and origin of the incident.