PMID- 30771952 OWN - NLM STAT- MEDLINE DCOM- 20190408 LR - 20190408 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 197 DP - 2019 May 15 TI - Rapid and sensitive capillary electrophoresis method for the analysis of Ecstasy in an oral fluid. PG - 390-396 LID - S0039-9140(19)30029-3 [pii] LID - 10.1016/j.talanta.2019.01.029 [doi] AB - In the present study, a capillary electrophoresis method, with a native fluorescence detection for the quantification of three amphetamine derivatives, methylenedioxyamphetamine (MDA), 3,4-methylenedioxy-methamphetamine (MDMA), methylenedioxyethylamphetamine (MDEA) in an oral fluid is described. The reported CE method has made it possible to assess Ecstasy abuse in approximately 15 min, including a saliva sample collection, pretreatment procedures and capillary electrophoresis (CE) analysis. The proof of the principle that was demonstrated on a home-made lab scale instrument has had the potential to be easily translated onto a truly portable instrument for on-site measurements. The baseline CE separation of the three illegal drugs was achieved in 10 min, by applying an aqueous background electrolyte (BGE) that was composed of 40 mM phosphoric acid and 10 mM triethanolamine. The amphetamine derivatives were detected at their lambda(ex)/lambda(em) maximum (280/326 nm) with LOD values of about 3 ng/mL for each amphetamine. The recovery of the compounds from the collection pad was about 40% of the LOQ concentrations and the inter-day precision was less than 6% for all of the analytes. The procedure was applied to a quantitation of oral fluid (OF) samples that were collected during the Baltic Weekend Music Festival that was held in Estonia. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Saar-Reismaa, Piret AU - Saar-Reismaa P AD - Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia Tee 15, Tallinn, Estonia. FAU - Tretjakova, Anastassia AU - Tretjakova A AD - Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia Tee 15, Tallinn, Estonia. FAU - Mazina-Sinkar, Jekaterina AU - Mazina-Sinkar J AD - Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia Tee 15, Tallinn, Estonia. FAU - Vaher, Merike AU - Vaher M AD - Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia Tee 15, Tallinn, Estonia. FAU - Kaljurand, Mihkel AU - Kaljurand M AD - Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia Tee 15, Tallinn, Estonia. FAU - Kulp, Maria AU - Kulp M AD - Tallinn University of Technology, Department of Chemistry and Biotechnology, Akadeemia Tee 15, Tallinn, Estonia. Electronic address: maria.kulp@taltech.ee. LA - eng PT - Journal Article DEP - 20190108 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Body Fluids/*chemistry MH - Electrophoresis, Capillary MH - Humans MH - Molecular Structure MH - N-Methyl-3,4-methylenedioxyamphetamine/*analysis OTO - NOTNLM OT - Capillary electrophoresis OT - Ecstasy OT - Fluorescence OT - Oral fluid EDAT- 2019/02/18 06:00 MHDA- 2019/04/09 06:00 CRDT- 2019/02/18 06:00 PHST- 2018/08/28 00:00 [received] PHST- 2019/01/03 00:00 [revised] PHST- 2019/01/07 00:00 [accepted] PHST- 2019/02/18 06:00 [entrez] PHST- 2019/02/18 06:00 [pubmed] PHST- 2019/04/09 06:00 [medline] AID - S0039-9140(19)30029-3 [pii] AID - 10.1016/j.talanta.2019.01.029 [doi] PST - ppublish SO - Talanta. 2019 May 15;197:390-396. doi: 10.1016/j.talanta.2019.01.029. Epub 2019 Jan 8.