A portable and autonomous multichannel fluorescence detector for on-line and in situ explosive detection in aqueous phase

Xin, Yunhong; Wang, Qi; Liu, Taihong; Wang, Lingling; Li, Jia; Yu, Fang

doi:10.1039/c2lc40804j

Cited by 28 publications

(23 citation statements)

References 39 publications

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“…3 Fluorescence methods have also been applied to the field detection of explosives due to their sensitivity, selectivity, simplicity and low cost instrumentation. [27][28][29][30][31] Polymer films have been used as fluorophore sensors, however, these films are difficult to synthesise and are mostly constrained to the detection of explosives in an aqueous solution. 30,31 Various ''Lab-on-a-chip'' devices, particularly CE-based electrochemical microsystems, have also been used in the field of explosive detection.…”

Section: Introductionmentioning

confidence: 99%

A portable explosive detector based on fluorescence quenching of pyrene deposited on coloured wax-printed μPADs

et al. 2013

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A new technique for the detection of explosives has been developed based on fluorescence quenching of pyrene on paper-based analytical devices (μPADs). Wax barriers were generated (150 °C, 5 min) using ten different colours. Magenta was found as the most suitable wax colour for the generation of the hydrophobic barriers with a nominal width of 120 μm resulting in fully functioning hydrophobic barriers. One microliter of 0.5 mg mL(-1) pyrene dissolved in an 80:20 methanol-water solution was deposited on the hydrophobic circle (5 mm diameter) to produce the active microchip device. Under ultra-violet (UV) illumination, ten different organic explosives were detected using the μPAD, with limits of detection ranging from 100-600 ppm. A prototype of a portable battery operated instrument using a 3 W power UV light-emitting-diode (LED) (365 nm) and a photodiode sensor was also built and evaluated for the successful automatic detection of explosives and potential application for field-based screening.

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Section: Introductionmentioning

confidence: 99%

A portable explosive detector based on fluorescence quenching of pyrene deposited on coloured wax-printed μPADs

et al. 2013

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“…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. 5,[30][31][32] Several luminescent probes have been explored as fluorescence based explosive-sensors till date, 12,22,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] but their multi-step processing, toxicity and lack of control over molecular organization limits their wide use. 8,51 In fact, literature reports on fluorophore probe-based explosive sensing in water have been indeed scarce.…”

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confidence: 99%

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

Mukherjee

Desai

Manna

et al. 2015

Crystal Growth & Design

140

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Highly selective and sensitive aqueous phase-detection of well-known nitro explosive environmental pollutant 2,4,6-Trinitrophenol (TNP) by a water-stable, porous luminescent metal-organic framework has been reported. The presence of guest accessible aliphatic amine functionality in the MOF channels has been strategically harnessed for serving the purpose of exclusive TNP-sensing in water even in concurrent presence of other nitro aromatic and nitro aliphatic analytes.

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“…In Table 1, the different fitting equations found in the calibration procedure are presented, where is the concentration of the nitroaromatic compound and is the calculated Euclidean colorimetric distance. [31,32]. In this work, we propose developing an even simpler algorithm able to calculate the presence and concentration of certain nitroaromatic compounds, some of them explosives, thus making the use of computationally costly multivariable techniques unnecessary.…”

Section: Calibration Curvesmentioning

confidence: 99%

Computer Vision-Based Portable System for Nitroaromatics Discrimination

et al. 2016

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A computer vision-based portable measurement system is presented in this report. The system is based on a compact reader unit composed of a microcamera and a Raspberry Pi board as control unit. This reader can acquire and process images of a sensor array formed by four nonselective sensing chemistries. Processing these array images it is possible to identify and quantify eight different nitroaromatic compounds (both explosives and related compounds) by using chromatic coordinates of a color space. The system is also capable of sending the obtained information after the processing by a WiFi link to a smartphone in order to present the analysis result to the final user. The identification and quantification algorithm programmed in the Raspberry board is easy and quick enough to allow real time analysis. Nitroaromatic compounds analyzed in the range of mg/L were picric acid, 2,4-dinitrotoluene (2,4-DNT), 1,3-dinitrobenzene (1,3-DNB), 3,5-dinitrobenzonitrile (3,5-DNBN), 2-chloro-3,5-dinitrobenzotrifluoride (2-C-3,5-DNBF), 1,3,5-trinitrobenzene (TNB), 2,4,6-trinitrotoluene (TNT), and tetryl (TT).

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A portable and autonomous multichannel fluorescence detector for on-line and in situ explosive detection in aqueous phase

Cited by 28 publications

References 39 publications

A portable explosive detector based on fluorescence quenching of pyrene deposited on coloured wax-printed μPADs

A portable explosive detector based on fluorescence quenching of pyrene deposited on coloured wax-printed μPADs

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

Computer Vision-Based Portable System for Nitroaromatics Discrimination

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