Electrified Soft Interface as a Selective Sensor for Cocaine Detection in Street Samples | Zendy

Łukasz Półtorak | Zendy; Irene Eggink | Zendy; Marnix A. Hoitink | Zendy; Ernst J. R. Sudhölter | Zendy; Marcel de Puit | Zendy

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Electrified Soft Interface as a Selective Sensor for Cocaine Detection in Street Samples

Author(s) -

Łukasz Półtorak,

Irene Eggink,

Marnix A. Hoitink,

Ernst J. R. Sudhölter,

Marcel de Puit

Publication year - 2018

Publication title -

analytical chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.117

H-Index - 332

eISSN - 1520-6882

pISSN - 0003-2700

DOI - 10.1021/acs.analchem.8b00916

Subject(s) - chemistry , miniaturization , interface (matter) , electrochemistry , selectivity , analytical chemistry (journal) , electrochemical gas sensor , nanotechnology , chromatography , electrode , molecule , organic chemistry , gibbs isotherm , materials science , catalysis

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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