Issue 24, 2014

Rapid, on-site detection of residual explosives based on a lab-in-a-capillary and UV fiber sensor

Abstract

An integrated portable system based on a lab-in-a-capillary and a UV (190–400 nm) reflected fiber sensor was demonstrated for on-site detection of trace amounts of explosives in a micro-nanoliter droplet. The filtration and measurement of the residual explosive sample were integrated in a compact device. The micro-droplet (1 nL–1 μL) was loaded onto the capillary-end by the equilibrium between gravity and negative air pressure for UV spectral analysis. Moreover, a new mixed spectrum decomposition algorithm (MSDA) was used to calculate the concentration of multiple explosives in the soil of the explosion site. This system for real-time explosive analysis features a short sample preparation and analysis time (<5 s), low sample consumption (10 nL), wide detection range (1–250 ng μL−1), low detection limit (<10 pg), and is easy to disassemble and clean, which fulfills the requirements for on-site explosive detection.

Graphical abstract: Rapid, on-site detection of residual explosives based on a lab-in-a-capillary and UV fiber sensor

Article information

Article type
Paper
Submitted
13 Sep 2014
Accepted
09 Oct 2014
First published
10 Oct 2014

Anal. Methods, 2014,6, 9628-9633

Author version available

Rapid, on-site detection of residual explosives based on a lab-in-a-capillary and UV fiber sensor

R. Wang, G. Yang, J. Zhang, Q. Li, R. Fu, J. Ye, T. Wang, Y. Lu, H. Zhou and G. Huang, Anal. Methods, 2014, 6, 9628 DOI: 10.1039/C4AY02143F

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