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EGDN (Ethylene Glycol Dinitrate)

Definition

A volatile nitrate ester component of dynamite-type commercial explosives. Its high vapour pressure and long soil migration distance make it a reliable post-blast indicator of commercial blasting gelatine even at distances of tens of metres from the blast seat.

Related terms

Electron Ionisation (EI)
The standard ionisation mode in GC-MS, using a 70 eV electron beam in high vacuum to ionise and fragment vapour-phase analytes. Produces...
Energy-Dispersive XRF (EDXRF)
An XRF configuration in which characteristic X-rays from all excited elements are detected simultaneously by a silicon drift detector. Used in handheld...
ENFSI FEL Network
The European Network of Forensic Science Institutes Forensic Explosives Laboratory Network, linking national forensic explosives laboratories across 18 EU member states. Maintains...
Selected Reaction Monitoring (SRM)
A triple-quadrupole LC-MS/MS acquisition mode in which Q1 selects a precursor ion, Q2 fragments it, and Q3 detects a specific product ion....
SEM-EDX
Scanning electron microscopy with energy-dispersive X-ray spectroscopy. The electron beam excites characteristic X-rays from each element present in the target grain, giving...
Spheroidal Propellant Particle
A smooth, approximately spherical particle of ball-type smokeless powder 50-300 micrometres in diameter, identifiable under SEM by its distinctive morphology. Presence in...
Split-Sample Protocol
The practice of dividing a forensic extract into two portions before analysis, one for prosecution analysis and one archived for potential defence...
Suppressed Conductivity IC
An ion chromatography detection method in which a membrane suppressor chemically neutralises the background eluent conductivity, leaving only the analyte ions as...
SWGMAT
Scientific Working Group for Materials Analysis, a US forensic science standards body (now succeeded by the OSAC Explosives Subcommittee). Published the Forensic...

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