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A miniaturized, trace level sensor for cocaine is presented. A quantum cascade laser emitting at 1720 cm-1 is coupled to a fibred absorption flow-cell. A detection limit lower than 250 ng/mL (84 ppb) is reported.
Elyahou Kapon, Grigore Suruceanu, Alexandru Mereuta, Andrei Caliman
Klaus Kern, Marko Burghard, Kristina Vaklinova
Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Hua Zhang, Denis Martin, Ching-Wen Shih