Multivariate analysis of statistically poor EDXRD spectra for the detection of concealed explosives

Exploitation of Guest Accessible Aliphatic Amine Functionality of a Metal–Organic Framework for Selective Detection of 2,4,6-Trinitrophenol (TNP) in Water

“…19,20 However, selective and sensitive detection of aqueous contaminant TNP in presence of competing nitro analytes poses great challenge, in view of the said analyte's high electron affinity facilitating false response. [21][22][23] Current explosive detection methods including trained canines and modern analytical techniques such as, highpressure liquid chromatography, 24 surface-enhanced Raman spectroscopy, 25 amperometry, 26 energy-dispersive X-ray analysis, 27 electrochemistry, 28 cyclic voltammetry, 29 etc., although significant, but suffers from common drawbacks like cumbersome pretreatment of samples, interference from other compounds, low sensitivity, high operational cost, sophisticated instrumentation, and portability issues during infield use. 2,24 On the flipside, fluorescent probe based method harnessed from photoluminescence (PL)-based chemosensors possess unparalleled sensitivity, selectivity, low instrumentation cost, portability, short response time, and dual compatibility in solid and solution media.…”

Detection of heroin covered by skin by using robust principal components analysis

“…Thus, in order to crack down on this criminal activity, developing effective methods and instruments to identify body packing has been widely focused. Energy dispersive X-ray diffraction (EDXRD) has been shown to be a suitable technique to detect explosives and drugs in baggage [1][2][3][4][5].…”

“…Besides, the diffraction profile is another important feature, because spectra resulting from the scattering media's diffraction effects are superimposed on the incident spectra to produce a unique diffraction profile. It can be regarded as the 'fingerprint' of the detected object, which has been demonstrated previously [1,2].…”

A facile one-step photochemical strategy for preparation of polyacrylamide functionalized CdTe(S) quantum dots and their application in sensitive determination of 2,4,6-trinitrotoluene

“…Therefore, fast and reliable detection of trace TNT has attracted considerable attentions [5]. Various analytical techniques, including gas chromatography [6,7], high performance liquid chromatography [8,9], voltammetry [10,11], ion mobility spectrometry [12,13], mass spectrometry [14,15], energy dispersive X-ray diffraction [16,17], surface enhanced Raman spectroscopy [18,19], and surface plasmon resonance [20][21][22], just name a few, have been applied in the detection of trace amounts of TNT. These techniques are all effective, but the requirement of complicated analytical instruments, lengthy and tedious operation procedures of these methods exclude their application in on-site analysis, especially in emergencies.…”