Manuel López-Rivadulla

Learn More
A simple, rapid and highly sensitive method for the analysis of THC-COOH in urine, using automated on-line solid-phase extraction (SPE) combined with liquid chromatography (LC)-mass spectrometry(More)
A validated method for the simultaneous analysis of multiple hallucinogens, chlorpheniramine, ketamine, ritalinic acid, and several metabolites is presented. The procedure comprises a sample clean-up(More)
A new, simple and rapid procedure has been developed and validated for the determination of cocaine and its main metabolite, benzoylecgonine, in human hair samples. After extraction from within the(More)
In this paper, a fast, sensitive and selective LC-MS/MS method is described for the simultaneous determination of amitriptyline, imipramine, clomipramine, fluoxetine, paroxetine, sertraline,(More)
Amphetamine-type-stimulants (ATS) are the second most commonly used group of illicit drugs worldwide. However, in the last few years, new psychoactive substances (NPS) with stimulant effects have(More)
An LC-MS/MS method using 0.5 ml of oral fluid was developed for the determination of morphine, codeine, 6-monoacetylmorphine, methadone, amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine,(More)
A rapid, sensitive and fully automated on-line solid-phase extraction-liquid chromatography-tandem mass spectrometry (SPE-LC-MS/MS) method was developed and validated for the direct analysis of 14(More)
We have developed a new technique to determine the concentration of hypoxanthine [Hx] in a reverse phase column using a modified high-performance liquid chromatography (HPLC) method that is faster(More)