PMID- 32390045 OWN - NLM STAT- MEDLINE DCOM- 20210331 LR - 20210331 IS - 1945-239X (Electronic) IS - 0021-9665 (Linking) VI - 58 IP - 6 DP - 2020 Jun 5 TI - Rapid Analysis of Four Amphetamines in Urine by Self-Made Pipette-Tip Solid-Phase Extraction Followed by GC-MS/MS. PG - 569-575 LID - 10.1093/chromsci/bmaa018 [doi] AB - A simple and rapid pipette-tip solid-phase extraction (PT-SPE) procedure with derivatization prior to gas chromatography triple quadrupole mass spectrometry analysis is developed for the simultaneous determination of amphetamine (AMP), methamphetamine (MA), 3,4-methylenedioxyamphetamine (MDA) and 3,4-methylenedioxymethamphetamine (MDMA) in urine samples. The PT-SPE procedure using self-made sorbent could extract drugs within 6 min from 100-muL urine samples, requiring low solvent-consumption (<2.0 mL). Besides, the self-made pipette tip could be reused at least five times. Under optimized conditions, the recoveries of four amphetamines at spiked levels (low, medium and high) ranged from 87.7 to 110.4%, with relative standard deviations < 9.5%. The limit of detections and limit of quantifications for AMP, MA, MDA and MDMA were in the range of 2.52-8.25 ng⋅mL-1 and 8.4-27.5 ng⋅mL-1, respectively. Validation results show that the proposed method is suitable for the quantitation of amphetamines and has been successfully applied in the urine samples of suspected drug abusers. CI - (c) The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com. FAU - Shi, Jia-Wei AU - Shi JW AD - Zhejiang Pharmaceutical College, Ningbo, 315104, China. FAU - Zhou, Jing-Feng AU - Zhou JF AD - Zhejiang Pharmaceutical College, Ningbo, 315104, China. FAU - He, Xiong AU - He X AD - Zhejiang Pharmaceutical College, Ningbo, 315104, China. FAU - Zhang, Yun AU - Zhang Y AD - Department of Chemistry, Zhejiang University, Hangzhou 310027, China. LA - eng PT - Journal Article PL - United States TA - J Chromatogr Sci JT - Journal of chromatographic science JID - 0173225 RN - 0 (Amphetamines) SB - IM MH - Amphetamines/chemistry/isolation & purification/*urine MH - Equipment Design MH - Gas Chromatography-Mass Spectrometry/*methods MH - Humans MH - Limit of Detection MH - Linear Models MH - Reproducibility of Results MH - Solid Phase Extraction/instrumentation/*methods MH - Tandem Mass Spectrometry/*methods EDAT- 2020/05/12 06:00 MHDA- 2021/04/01 06:00 CRDT- 2020/05/12 06:00 PHST- 2019/02/26 00:00 [received] PHST- 2020/01/02 00:00 [revised] PHST- 2020/05/12 06:00 [pubmed] PHST- 2021/04/01 06:00 [medline] PHST- 2020/05/12 06:00 [entrez] AID - 5835493 [pii] AID - 10.1093/chromsci/bmaa018 [doi] PST - ppublish SO - J Chromatogr Sci. 2020 Jun 5;58(6):569-575. doi: 10.1093/chromsci/bmaa018.