The fast and accurate detection of trace explosives has become increasingly important in terms of anti-terrorism

nonmetal landmine detection and environmental monitoring.On the bases of brief introduction of general techniques for the detection of explosives

various fluorescence sensors for the detection of trace amount of nitro-aromatic explosives

film sensors and fiber optic sensors are addressed.The fluorescence film sensors will find practical uses in the detection of trace amount of nitro-aromatic compounds explosives because of their high sensitivity

high selectivity

and also because they are re-usable

and they are easy to be made into devices.