Detection and mapping of trace explosives on surfaces under ambient conditions using multiphoton electron extraction spectroscopy (MEES)

TY - JOUR

T1 - Detection and mapping of trace explosives on surfaces under ambient conditions using multiphoton electron extraction spectroscopy (MEES)

AU - Tang, Shisong

AU - Vinerot, Nataly

AU - Fisher, Danny

AU - Bulatov, Valery

AU - Yavetz-Chen, Yehuda

AU - Schechter, Israel

N1 - Publisher Copyright: © 2016 Elsevier B.V. All rights reserved.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - Multiphoton electron extraction spectroscopy (MEES) is an analytical method in which UV laser pulses are utilized for extracting electrons from solid surfaces in multiphoton processes under ambient conditions. Counting the emitted electrons as a function of laser wavelength results in detailed spectral features, which can be used for material identification. The method has been applied to detection of trace explosives on a variety of surfaces. Detection was possible on dusty swabs spiked with explosives and also in the standard dry-transfer contamination procedure. Plastic explosives could also be detected. The analytical limits of detection (LODs) are in the sub pmole range, which indicates that MEES is one of the most sensitive detection methods for solid surface under ambient conditions. Scanning the surface with the laser allows for its imaging, such that explosives (as well as other materials) can be located. The imaging mode is also useful in forensic applications, such as detection of explosives in human fingerprints.

AB - Multiphoton electron extraction spectroscopy (MEES) is an analytical method in which UV laser pulses are utilized for extracting electrons from solid surfaces in multiphoton processes under ambient conditions. Counting the emitted electrons as a function of laser wavelength results in detailed spectral features, which can be used for material identification. The method has been applied to detection of trace explosives on a variety of surfaces. Detection was possible on dusty swabs spiked with explosives and also in the standard dry-transfer contamination procedure. Plastic explosives could also be detected. The analytical limits of detection (LODs) are in the sub pmole range, which indicates that MEES is one of the most sensitive detection methods for solid surface under ambient conditions. Scanning the surface with the laser allows for its imaging, such that explosives (as well as other materials) can be located. The imaging mode is also useful in forensic applications, such as detection of explosives in human fingerprints.

KW - Explosives

KW - Laser

KW - Mapping

KW - Solids

UR - http://www.scopus.com/inward/record.url?scp=84964836638&partnerID=8YFLogxK

U2 - 10.1016/j.talanta.2016.04.027

DO - 10.1016/j.talanta.2016.04.027

M3 - 文章

C2 - 27216679

AN - SCOPUS:84964836638

SN - 0039-9140

VL - 155

SP - 235

EP - 244

JO - Talanta

JF - Talanta

ER -