A solid colorimetric sensor for the analysis of amphetamine-like street samples

A review of chemical ‘spot’ tests: A presumptive illicit drug identification technique

“…This sensor was incorporated into a tube for in‐tube detection, affording quantitative results when combined with digital colorimetry even when performed on colored drug samples and spiked urine samples. Similarly, a solid colorimetric sensor has been developed for the analysis of 4 amphetamine‐type samples by embedding the reagent, 1,2‐naphthoquinone‐4‐sulphonate (NQS), into a polymeric matrix . A color change is observed following placement of the solid sensor in a buffer solution of the amphetamine samples for 10 minutes.…”

Recent advances in developing optical and electrochemical sensors for analysis of methamphetamine: A review

“…The drugs include MAMP, 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA) derivatized inside the composite to embed a colored product in the investigation of the diffuse reflectance or the color intensity. The fabricated kit distinguished the targets in the street samples with a LOD range of 6.46e16.16 mM (Argente-García et al, 2016).…”

Chromogenic and Fluorogenic Probes for the Detection of Illicit Drugs

“…- [22] dextromethorphans pectrophotometric methodpharmaceuticals preparations 3.5 10 À3 - [23] morphine and codeineAuNPs human serum, urine samples, and pharmaceutical formulations 4.85 10 À6 and 2. 69 10 À6 cations, anions, ascorbicacid, glucose, urea, cysteine, glutamic acid, asparagine,l eucine, valine,proline, phenylalanine, tramadol,AMP, and MAMP [24] STIMULANTD RUGS MA, EPH,a nd MeEPH formationo fc olored product urine 3.75 10 À3 , 4.13 10 À3 ,a nd 4.48 10 À3 CaCl 2 ,N aCl, MgCl, NaNO 3 ,CH 3 COONa, Al III , Fe III ,Ni II ,Co II ,NH 4 + ,urea, uric acid, creatinine, and hippurica cid [26,27] AMP,MA, MDMA,and MDA NPs basicbuffered aqueous 2-5 cocaine, cannabinol, cannabidiol, THC, scopolamine, EPH, and procaine [28] cocainebiomimetic material (AuNPs) absorbent pad -Benzoylecgonine, nicotine, cotinine, codeine, THC and MA [29] MA Simon's reagentapplied to mobile phonet echnology applicationi nstalled on amobile phone 1.10 10 À2 to 4.4 10 À2…”

“…Herrµez-Hernµndez and co-workers embed 1,2-naphthoquinone-4-sulfonate 20 ( Figure 4) into polydimethylsiloxane/tetraethylorthosilicate/silicon dioxide nanoparticles and use this mixture to identify amphetamine (AMP), methamphetamine (MAMP), 3,4methylenedioxymethamphetamine (MDMA), and 3,4-methylenedioxyamphetamine (MDA) chromogenically. [28] Basic buffered aqueous suspensions of the nanoparticles show al ight yellow color due to the presence of ab road absorption band at around l = 460 nm. Upon the addition of amphetamines, clear colorc hanges to orange (for MAMP and MDMA, which are secondary amines)o rg ray-brown (for AMP and MDA, which are primarya mines) are observed.…”