6533b7d4fe1ef96bd126296d
RESEARCH PRODUCT
A solid colorimetric sensor for the analysis of amphetamine-like street samples.
Rosa Herráez-hernándezN. Jornet-martínezA. Argente-garcíaPilar Campíns-falcósubject
AnalyteSpectrophotometry InfraredStreet drugsAnalytical chemistryNQS02 engineering and technology01 natural sciencesBiochemistryAnalytical Chemistrychemistry.chemical_compoundColorimetric sensormedicineEnvironmental ChemistryAmphetamineSpectroscopyDetection limitPolydimethylsiloxaneIllicit Drugs010401 analytical chemistryAmphetaminesColor intensity021001 nanoscience & nanotechnology0104 chemical scienceschemistryColorimetrySpectrophotometry Ultraviolet0210 nano-technologymedicine.drugdescription
A solid sensor obtained by embedding 1,2-naphthoquinone-4-sulfonate (NQS) into polydimethylsiloxane/tetraethylortosilicate/silicon dioxide nanoparticles composite has been developed to identify and determine amphetamine (AMP), methamphetamine (MAMP), 3,4-methylenedioxymetamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA). The analytes are derivatized inside the composite for 10 min to create a colored product which can be then quantified by measuring the diffuse reflectance or the color intensity after processing the digitalized image. Satisfactory limits of detection (0.002–0.005 g mL−1) and relative standard deviations (<10%) have been achieved. The proposed kit has been successfully validated and applied to the analysis of amphetamine-like drugs street samples. The kit allows the in-situ screening of the mentioned illicit drugs owing to its simplicity, rapidity and portability, with excellent sensor stability and at a very low-cost.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-06-28 | Analytica chimica acta |