Simultaneous identification and quantification of nitro-containing explosives by advanced chemometric data treatment of cyclic voltammetry at screen-printed electrodes

Cetó, Xavier; Mahony, Aoife M. O’; Wang, Joseph; Valle, Manel del

doi:10.1016/j.talanta.2012.12.042

Cited by 61 publications

(42 citation statements)

References 29 publications

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“…When chemically modified in a multiplexed mode, by the surface immobilization of multiple non-specific small chemical receptors, nanowire-based fieldeffect-transistor arrays (NW-FETs) enable the supersensitive discriminative detection, fingerprinting, of multiple explosive molecules, down to the parts-per-quadrillion concentration range 19 . The differential identification between explosives is achieved by pattern recognizing the naturally inherent interaction, both kinetically and thermodynamically [20][21][22][23][24][25][26][27] , between the chemically modified nanosensors array and the chemical analytes under test. Thus, a unique explosives fingerprinting database can be created, enabling to set apart similar chemical entities, and providing a fast and reliable method to identify individual chemical agents.…”

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confidence: 99%

Supersensitive fingerprinting of explosives by chemically modified nanosensors arrays

Lichtenstein¹,

Havivi²,

Shacham³

et al. 2014

Nat Commun

174

128

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The capability to detect traces of explosives sensitively, selectively and rapidly could be of great benefit for applications relating to civilian national security and military needs. Here, we show that, when chemically modified in a multiplexed mode, nanoelectrical devices arrays enable the supersensitive discriminative detection of explosive species. The fingerprinting of explosives is achieved by pattern recognizing the inherent kinetics, and thermodynamics, of interaction between the chemically modified nanosensors array and the molecular analytes under test. This platform allows for the rapid detection of explosives, from air collected samples, down to the parts-per-quadrillion concentration range, and represents the first nanotechnology-inspired demonstration on the selective supersensitive detection of explosives, including the nitro-and peroxide-derivatives, on a single electronic platform. Furthermore, the ultrahigh sensitivity displayed by our platform may allow the remote detection of various explosives, a task unachieved by existing detection technologies.

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mentioning

confidence: 99%

Supersensitive fingerprinting of explosives by chemically modified nanosensors arrays

Lichtenstein¹,

Havivi²,

Shacham³

et al. 2014

Nat Commun

174

128

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“…Chemometric treatment of cyclic voltammograms for evaluation of different explosive species commonly found in GSR has also been reported 47. This was done employing electronic tongue principles that allow resolution of signal overlapping and extraction of the characteristic fingerprints, although this has not yet been implemented for real GSR samples.…”

Section: The Next Step In Gunshot Residue Analysis: Chemometric Datmentioning

confidence: 99%

Electrochemical Detection of Gunshot Residue for Forensic Analysis: A Review

O’Mahony

Wang

2013

Electroanalysis

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Current demands for detection of Gunshot Residue (GSR) require a reliable and rapid decentralized detection system with high sensitivity and specificity. This article reviews the use of electrochemical devices for GSR detection over the last 35 years and highlights recent advances associated with the demands of GSR field detection such as portability, speed, cost and power. Anodic stripping voltammetry (ASV) has been widely implemented for the detection of the metallic components of GSR at a variety of working electrodes. Efforts toward the detection of the organic components of GSR have also been reported using cyclic-and square-wave voltammetry. The simultaneous detection of both organic and inorganic GSR constituents has recently been examined to increase the overall information content in a single voltammetric scan. As well as this, exploitation of screen-printing fabrication allows replacement of conventional electrochemical cells with easy-to-use sensor strips Sampling methods for electrochemical GSR analysis are also advancing from acid washes or swabs to simpler abrasive methods which integrate sampling and analysis obviating the need for intermediate processing steps. The latest direction of electrochemical detection of GSR involves chemometric treatment to evaluate data allowing for more objective conclusions and increasing the automation of the system. These advances indicate great promise for investigating firearm-related crimes, and bring significant changes to the detection of GSR making electroanalysis a powerful tool for decentralized forensic analysis.

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“…A new methodology in the sensors field is the use of sensors in arrays coupled with complex data treatment, that is, the use of electronic tongues; these are versatile sensor systems capable to simultaneously monitor the level of different analytes, or analytes in presence of their interferents, or to resolve mixtures of similar analytes [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…In these original works, originated at the laboratories of Prof. Winquist in Linkoping (Sweden), the sensor array was formed by an array of different metallic disc electrodes, and a scanning voltammetric technique was used to generate the analytical information [30]. The voltammetric principle has also been applied to develop electronic tongues since its early years, such as simultaneous identification and quantification of nitrocontaining explosives by advanced chemometric data treatment of cyclic voltammetry at screen-printed electrodes [28], instrumental measurement of wine sensory descriptors using a voltammetric electronic tongue [33], evaluation of red wines antioxidant capacity by means of a voltammetric e-tongue with an optimized sensor array [34], voltammetric electronic tongue for the qualitative analysis of beers [27] and cava wine authentication employing a voltammetric electronic tongue [35].…”

Section: Introductionmentioning

confidence: 99%

Resolution of galactose, glucose, xylose and mannose in sugarcane bagasse employing a voltammetric electronic tongue formed by metals oxy-hydroxide/MWCNT modified electrodes

Sá

Cipri

González‐Calabuig

et al. 2016

Sensors and Actuators B: Chemical

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Simultaneous identification and quantification of nitro-containing explosives by advanced chemometric data treatment of cyclic voltammetry at screen-printed electrodes

Cited by 61 publications

References 29 publications

Supersensitive fingerprinting of explosives by chemically modified nanosensors arrays

Supersensitive fingerprinting of explosives by chemically modified nanosensors arrays

Electrochemical Detection of Gunshot Residue for Forensic Analysis: A Review

Resolution of galactose, glucose, xylose and mannose in sugarcane bagasse employing a voltammetric electronic tongue formed by metals oxy-hydroxide/MWCNT modified electrodes

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