Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2011.12.016 View full text
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I.E.D. Moreno, B.M. da Fonseca, A.R. Magalhães, V.S. Geraldes, J.A. Queiroz, M. Barroso, S. Costa, E. Gallardo

Abstract: This paper describes the analysis of piperazine-type stimulants [1-benzylpiperazine (BZP), 1-(3-trifluoromethylphenyl)piperazine (TFMPP), 1-(3-chlorophenyl)piperazine (mCPP) and 1-(4-methoxyphenyl)piperazine (MeOPP)] in low volume urine samples (0.1 mL) by microextraction in packed sorbent and liquid chromatography-diode array detection. Analyte extraction has been comprehensively optimized, and the influencing factors were screened by means of the fractional factorial design approach. Several parameters susce…

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