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Electrified Soft Interface as a Selective Sensor for Cocaine Detection in Street Samples
Lukasz Poltorak1, Irene Eggink, Marnix Hoitink1
1Delft University of Technology , Department of Chemical Engineering , Van der Maasweg 9 , 2629 HZ Delft , The Netherlands.
Abstract:
A straightforward, direct, and selective method is presented for electrochemical cocaine identification in street samples. The sensing mechanism is based on a simple ion transfer reaction across the polarized liquid-liquid interface. The interfacial behavior of a number of cutting agents is also reported. Interfacial miniaturization has led to improved electroanalytical properties of the liquid-liquid interface based sensor as compared with the macroscopic analogue. The reported method holds great potential to replace colorimetric tests with poor selectivity for on-site street sample analysis.
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