PMID- 11473798 OWN - NLM STAT- MEDLINE DCOM- 20010927 LR - 20190901 IS - 0379-0738 (Print) IS - 0379-0738 (Linking) VI - 120 IP - 3 DP - 2001 Sep 1 TI - Application of solvent microextraction to the analysis of amphetamines and phencyclidine in urine. PG - 165-71 AB - A fast and simple method to detect some commonly abused illicit drugs, amphetamine, methamphetamine, 3,4-methylendioxy-amphetamine (MDA), 3,4-methylendioxy-methamphetamine (MDMA), 3,4-methylendioxy-N-ethylamphetamine (MDEA) and phencyclidine (PCP) in urine using solvent microextraction (SME) combined with gas chromatography (GC) analysis has been developed. The extraction is conducted by suspending a 2 microl drop of chloroform in a 2 ml urine sample. Following 8 min of extraction, the organic solvent is withdrawn into the syringe and injected into a GC with a pulsed discharge helium ionization detector (PDHID). The effects of different extraction solvents and times, pH and sample preparation were studied. The optimized method was capable of detecting drugs in urine at concentrations below Substance Abuse and Mental Health Services Administration (SAMHSA) established cut-off values for preliminary testing. Good linearity and reproducibility of extraction were obtained. The limits of detection were 0.5 microg/ml for amphetamine, 0.1 microg/ml for methamphetamine and MDA, 0.05 microg/ml for MDMA, 0.025 microg/ml for MDEA and 0.015 microg/ml for PCP. Relative standard deviation (R.S.D.) values ranged between 5 and 20% for the studied drugs. FAU - Casari, C AU - Casari C AD - Facolta di Farmacia, Universita del Piemonte Orientale, Viale Ferrucci 33, I-28100, Novara, Italy. FAU - Andrews, A R AU - Andrews AR LA - eng PT - Journal Article PL - Ireland TA - Forensic Sci Int JT - Forensic science international JID - 7902034 RN - 0 (Amphetamines) RN - J1DOI7UV76 (Phencyclidine) SB - IM MH - Amphetamines/*urine MH - Chromatography, Gas/*methods MH - Humans MH - Hydrogen-Ion Concentration MH - Phencyclidine/*urine MH - Reproducibility of Results EDAT- 2001/07/28 10:00 MHDA- 2001/09/28 10:01 CRDT- 2001/07/28 10:00 PHST- 2001/07/28 10:00 [pubmed] PHST- 2001/09/28 10:01 [medline] PHST- 2001/07/28 10:00 [entrez] AID - S0379073800004667 [pii] AID - 10.1016/s0379-0738(00)00466-7 [doi] PST - ppublish SO - Forensic Sci Int. 2001 Sep 1;120(3):165-71. doi: 10.1016/s0379-0738(00)00466-7.