RT info:eu-repo/semantics/article
T1 Study of the adhesion of explosive residues to the finger and transfer to clothing and luggage
A1 Lees, Heidi
A1 Zapata Arráez, Félix
A1 Vaher, Merike
A1 García Ruiz, Carmen
K1 Explosives
K1 Adhesion
K1 Transfer
K1 Fingerprint
K1 Multispectral imaging.
K1 Química
K1 Chemistry
AB It is important to understand the extent of transfer of explosive particles to different surfaces in order to better evaluate potential cross-contamination by explosives in crowded security controls such as those at airports. This work investigated the transfer of nine explosive residues (ANFO, dynamite, black powder, TNT, HMTD, PETN, NH4NO3, KNO3, NaClO3) through fingerprints from one surface to another. First, the extent of adhesion of explosive residues from different surfaces to the bare finger, nitrile and latex gloves was studied. Then, the transfer of explosive residues from one surface to another through fingerprints was investigated. Cotton fabric (hereinafter referred to as cotton) as clothing material and polycarbonate plastic (hereinafter referred to as polycarbonate) as luggage material were chosen for the experiments. These surfaces containing explosive particles were imaged using a reflex camera before and after the particles were transferred. Afterwards the images were processed in MATLAB where pixels corresponding to explosive residues were quantified. Results demonstrated that transfer of explosive residues frequently occurred with certain differences among materials. Generally, the amount of explosive particles adhered to the finger decreased in the following order: skin>latex>nitrile, while the transfer of particles from the finger to another surface was the opposite. The adhesion of explosive residues from polycarbonate to the finger was found to be better compared to cotton, while the amount of particles transferred to cotton was higher.
SN 1355-0306
YR 2018
FD 2018-11
LK http://hdl.handle.net/10017/47607
UL http://hdl.handle.net/10017/47607
LA eng
DS MINDS@UW
RD 20-abr-2024