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Analysis of phenylpiperazine-like stimulants in human hair as trimethylsilyl derivatives by gas chromatography-mass spectrometry.
Barroso M, Costa S, Dias M, Vieira DN, Queiroz JA, López-Rivadulla M. Barroso M, et al. Among authors: lopez rivadulla m. J Chromatogr A. 2010 Oct 1;1217(40):6274-80. doi: 10.1016/j.chroma.2010.08.001. Epub 2010 Aug 11. J Chromatogr A. 2010. PMID: 20800845
A simple and sensitive procedure, using p-tolylpiperazine (pTP) as internal standard (IS), has been developed and validated for the qualitative and quantitative analysis of 1-(3-trifuoromethylphenyl)piperazine (TFMPP), 1-(3-chlorophenyl)piperazine (mCPP) and 1-(4-methoxyphenyl)pi …
A simple and sensitive procedure, using p-tolylpiperazine (pTP) as internal standard (IS), has been developed and validated for the qualitat …
An LC-MS/MS methodological approach to the analysis of hair for amphetamine-type-stimulant (ATS) drugs, including selected synthetic cathinones and piperazines.
Lendoiro E, Jiménez-Morigosa C, Cruz A, Páramo M, López-Rivadulla M, de Castro A. Lendoiro E, et al. Among authors: lopez rivadulla m. Drug Test Anal. 2017 Jan;9(1):96-105. doi: 10.1002/dta.1948. Epub 2016 Feb 24. Drug Test Anal. 2017. PMID: 26914712
Chromatographic separation was performed using an Atlantis T3 (3 m; 2.1x50 mm) analytical column, and ammonium formate 2 mM pH 3 and acetonitrile as mobile phase. ...
Chromatographic separation was performed using an Atlantis T3 (3 m; 2.1x50 mm) analytical column, and ammonium formate 2 mM pH 3 and …
LC-MS/MS method for the determination of nine antidepressants and some of their main metabolites in oral fluid and plasma. Study of correlation between venlafaxine concentrations in both matrices.
de Castro A, Concheiro M, Quintela O, Cruz A, López-Rivadulla M. de Castro A, et al. Among authors: lopez rivadulla m. J Pharm Biomed Anal. 2008 Sep 10;48(1):183-93. doi: 10.1016/j.jpba.2008.05.024. Epub 2008 May 28. J Pharm Biomed Anal. 2008. PMID: 18602787
An important inter and intraindividual variability was found in oral fluid concentrations for 150 mg dose (mean=287.5 ng/m, range 58.8-531.2 ng/mL) and for 75 mg dose (mean=186.3 ng/mL, range=82.1-289.2 ng/mL). ...
An important inter and intraindividual variability was found in oral fluid concentrations for 150 mg dose (mean=287.5 ng/m, range 58. …
Vitreous humour as a complementary sample to blood for the detection/confirmation of diazepam: ante-mortem and post-mortem studies in an animal model.
Teixeira HM, Reis F, Proença P, Ramos P, Quintela O, López-Rivadulla M, Marques E, Vieira DN. Teixeira HM, et al. Among authors: lopez rivadulla m. Hum Exp Toxicol. 2004 Dec;23(12):571-7. doi: 10.1191/0960327104ht490oa. Hum Exp Toxicol. 2004. PMID: 15688985
In addition, we have studied an animal group sacrificed 2 hours after intramuscular (i.m.) drug administration with blood and VH collection 24 hours later, to evaluate the existence of possible post-mortem changes. ...
In addition, we have studied an animal group sacrificed 2 hours after intramuscular (i.m.) drug administration with blood and VH coll …
Hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS) determination of cocaine and its metabolites benzoylecgonine, ecgonine methyl ester, and cocaethylene in hair samples.
Quintela O, Lendoiro E, Cruz A, de Castro A, Quevedo A, Jurado C, López-Rivadulla M. Quintela O, et al. Among authors: lopez rivadulla m. Anal Bioanal Chem. 2010 Mar;396(5):1703-12. doi: 10.1007/s00216-009-3393-5. Epub 2010 Jan 6. Anal Bioanal Chem. 2010. PMID: 20052577
Decontamination was performed as follows: Firstly, the aliquot of hair was briefly rinsed with 2 mL dichloromethane, then was washed three times with 10 mL 0.01 M phosphate buffer, pH 6, for 15 min, followed by 2 mL 2-propanol for less than 2 min, and, finally, a last rins …
Decontamination was performed as follows: Firstly, the aliquot of hair was briefly rinsed with 2 mL dichloromethane, then was washed three t …
Windows of detection of tetrazepam in urine, oral fluid, beard, and hair, with a special focus on drug-facilitated crimes.
Concheiro M, Villain M, Bouchet S, Ludes B, López-Rivadulla M, Kintz P. Concheiro M, et al. Among authors: lopez rivadulla m. Ther Drug Monit. 2005 Oct;27(5):565-70. doi: 10.1097/01.ftd.0000164610.14808.45. Ther Drug Monit. 2005. PMID: 16175127
Reversed-phase separation on an XTerra MS C18 column was achieved in 12 minutes, under gradient conditions. Pseudo-molecular ions selected were m/z 289.2 and 290.2 for tetrazepam and the internal standard (IS), respectively, and the corresponding daughter ions selected wer …
Reversed-phase separation on an XTerra MS C18 column was achieved in 12 minutes, under gradient conditions. Pseudo-molecular ions selected w …