Needle Trap (NT) is a needle packed with various sorbents, are used for extraction of gaseous samples, which can be directly thermally desorbed in the injector of GC/GC-MS systems for separation and detection. This results in the adsorption or absorption of volatile organic compounds. It can be combined different sorbents for wide range of VOC compounds extraction, eg.Tenax TA,Carboxen1016, Carboxen1000 or customized. It is by size a micro-extraction technology, but technically is an exhaustive device. It retains the advantages of SPME for extraction and injection. Due to the miniaturization and the modified extraction and desorption kinetics, the NT method is superior to the conventional thermal desorption for many applications.