TY - JOUR
T1 - Detection of explosives by plasma optical emission spectroscopy
AU - Fujiyama-Novak, Jane H.
AU - Gaddam, Chethan Kumar
AU - Das, Debanjan
AU - Wal, Randall L.Vander
AU - Ward, Benjamin
N1 - Funding Information:
The work was supported through a Phase II STTR with the U.S. Navy Naval Air Warfare Center (NAVAIR), Contract No. N68335-08-C-0020.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - A new pre-concentration/separation system coupled to a micro-hollow glow discharge (MHGD) plasma detector is demonstrated for the analysis of explosives. The detector and spectrometer are miniaturized and field-portable. Separation eliminated air interferences while pre-concentration improved detection limits for TATP (triacetone triperoxide) and DNT (dinitrotoluene). In the analysis step, a temperature ramp desorbed the two explosives into an entraining Ar flow. Optical emission spectroscopy (OES) was applied to detect the plasma generated atomic and diatomic radicals using a spectrometer at atmospheric pressure. For both test species, the detection limits reached values lower than 5 ppb. The effect of an at-sea environment was also evaluated. Such a detector system is very promising for the detection of explosives due its small size, high sensitivity and selectivity.
AB - A new pre-concentration/separation system coupled to a micro-hollow glow discharge (MHGD) plasma detector is demonstrated for the analysis of explosives. The detector and spectrometer are miniaturized and field-portable. Separation eliminated air interferences while pre-concentration improved detection limits for TATP (triacetone triperoxide) and DNT (dinitrotoluene). In the analysis step, a temperature ramp desorbed the two explosives into an entraining Ar flow. Optical emission spectroscopy (OES) was applied to detect the plasma generated atomic and diatomic radicals using a spectrometer at atmospheric pressure. For both test species, the detection limits reached values lower than 5 ppb. The effect of an at-sea environment was also evaluated. Such a detector system is very promising for the detection of explosives due its small size, high sensitivity and selectivity.
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U2 - 10.1016/j.snb.2012.08.063
DO - 10.1016/j.snb.2012.08.063
M3 - Article
AN - SCOPUS:84875466503
SN - 0925-4005
VL - 176
SP - 985
EP - 993
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -