Most Widely Used Methods For Detection Of Explosives

Inspection of containers, bags, purses, etc. is done in order to find out whether they have explosive material or not at places that are more prone to terror threats. Hence, the devices and methods for explosive detection are frequently used  at ports, airports, in bordering areas and in other sensitive locations.

Explosive Detection Systems
Below are listed some of the most widely used systems and methods that are used for detecting explosives. 

Automated Detection Cliometrics
This is one of oldest and most widely methods for detecting explosive substances. A chemical agent is applied by the user to the materials which are suspected to have explosives. Color reaction provides for detection. The method can be used to detect both traces and high amounts of explosive materials.

Trained Dogs
Dogs are trained by police, military and other security agency personal. These dogs have better sensitivity to certain smells that associate with explosives. If the dog gets bored or tired of the process, the effectively is reduced.

Scent Detection by Machines
Machines for explosive detection can deduce the signature traces of the explosive. One such machine is Ion Mobility Spectrometry. In this machine, the molecules are first ionized and then they are run at atmospheric pressure. Larger time for ion movement indicates that the ion is colliding with other gas molecules that may be from the inner hidden explosives.

Gas Chromatography
Machines are combined with gas chromatography so that molecules can be better separated for detecting explosives. By adding gas chromatography, the detector’s performance and accuracy can be increased manifold. The user also gets one another data dimension.

X-Ray Machine
X Ray machines also provide for detection of explosives by analyzing the density of materials that are being examined. The X ray machine used for explosive detection differs from those X ray machines that are used for studying human images by doctors and physicians. The explosive detection X Ray machines have color coding and threat library, dedicated software and a system that is based on computerized axial tomography. Many airports, train and bus stations and other locations that have sensitive security aspects employ these machines as checkpoint screening products.

Neutron Activation Machines 
These machines detect explosives by bombarding the suspect materials with atomic neutrons. They then try to determine what the chemical composition of the sample is by reading the signals that are given by gamma radiations.