PMID- 12711203 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20030729 LR - 20190901 IS - 0379-0738 (Print) IS - 0379-0738 (Linking) VI - 132 IP - 3 DP - 2003 Apr 8 TI - Optimization of extraction parameters for the chemical profiling of 3,4-methylenedioxymethamphetamine (MDMA) tablets. PG - 182-94 AB - The extraction of impurities from illegally produced 3,4-methylenedioxymethamphetamine (MDMA) has been studied in order to optimize the parameters. Two different MDMA samples were used. Particular attention was paid to the influence of the pH, the evaporation step, and the sample storage. The method used was an extraction of impurities by diethyl ether from a buffer solution at pH 11.5, followed by gas chromatography (GC) mass spectrometric (MS) analyses after a dryness concentration under monitored conditions of the ethereal extract. Repeat extractions of the same sample gave an average relative standard deviation (RSD) of less than 8.5% within day and less than 10.5% between days. FAU - Gimeno, Pascal AU - Gimeno P AD - Laboratoire de Police Scientifique de Lyon, 31 Avenue Franklin Roosevelt, 69134, Ecully, France. FAU - Besacier, Fabrice AU - Besacier F FAU - Chaudron-Thozet, Huguette AU - Chaudron-Thozet H LA - eng PT - Journal Article PL - Ireland TA - Forensic Sci Int JT - Forensic science international JID - 7902034 EDAT- 2003/04/25 05:00 MHDA- 2003/04/25 05:01 CRDT- 2003/04/25 05:00 PHST- 2003/04/25 05:00 [pubmed] PHST- 2003/04/25 05:01 [medline] PHST- 2003/04/25 05:00 [entrez] AID - S0379073803000197 [pii] AID - 10.1016/s0379-0738(03)00019-7 [doi] PST - ppublish SO - Forensic Sci Int. 2003 Apr 8;132(3):182-94. doi: 10.1016/s0379-0738(03)00019-7.