PMID- 12498266 OWN - NLM STAT- MEDLINE DCOM- 20030514 LR - 20191210 IS - 0021-9673 (Print) IS - 0021-9673 (Linking) VI - 979 IP - 1-2 DP - 2002 Dec 6 TI - Analysis of illicit amphetamine seizures by capillary zone electrophoresis. PG - 345-52 AB - Capillary zone electrophoresis was applied for the determination of amphetamine and related substances in seized drugs. A buffer made of 0.1 M phosphoric acid adjusted to pH 3.0 with triethanolamine was selected. With this background electrolyte, triethanolamine is adsorbed to the capillary wall and the electroosmotic flow is reversed. This gives rise to peaks with good symmetry, high efficiency and reproducible migration times. The separation of the different analytes was performed in a fused-silica capillary thermostatted at 25 degrees C and the applied voltage was 25 kV. Under these experimental conditions, amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine, 3,4-methylenedioxymethamphetamine (MDMA), 3,4-methylenedioxyethamphetamine, N-methyl-1-(1,3-benzodioxol-5-yl)-2-butamine and ephedrine were resolved within 8 min and without interference from adulterants usually found in illicit powders. Their identification by the migration time was confirmed by their UV spectra recorded with a diode array UV detector (190-350 nm). The selected method was then applied to identify these substances in illicit tablets known as "Ecstasy" and the MDMA determined in these samples according to a laboratory validation procedure. FAU - Piette, Veronique AU - Piette V AD - Laboratory of Drug Analysis, Scientific Institute of Public Health-Louis Pasteur, Rue Juliette Wytsman 14, B-1050 Brussels, Belgium. veronique.piette@iph.fgov.be FAU - Parmentier, Frans AU - Parmentier F LA - eng PT - Journal Article PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Amphetamines) RN - 0 (Buffers) RN - 0 (Illicit Drugs) SB - IM MH - Amphetamines/*analysis MH - Buffers MH - Electrophoresis, Capillary/*methods MH - Hydrogen-Ion Concentration MH - Illicit Drugs/*analysis MH - Reproducibility of Results MH - Spectrophotometry, Ultraviolet EDAT- 2002/12/25 04:00 MHDA- 2003/05/15 05:00 CRDT- 2002/12/25 04:00 PHST- 2002/12/25 04:00 [pubmed] PHST- 2003/05/15 05:00 [medline] PHST- 2002/12/25 04:00 [entrez] AID - S0021-9673(02)01405-X [pii] AID - 10.1016/s0021-9673(02)01405-x [doi] PST - ppublish SO - J Chromatogr A. 2002 Dec 6;979(1-2):345-52. doi: 10.1016/s0021-9673(02)01405-x.