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Iván Álvarez-Freire

Observed names: I Álvarez-Freire, I. Alvarez, I. Alvarez-Freire, I. Álvarez, I. Álvarez-Freire, Ivan Alvarez, Ivan Alvarez-Freire, Ivan Álvarez-Freire, Iván Alvarez-Freire, Iván Álvarez, Iván Álvarez Freire, Iván Álvarez‐Freire
ORCID: 0000-0003-3967-5366
Observed ORCID: 0000-0003-3967-5366
OpenAlex ID: A5059502895
Determination of direct alcohol markers: a review
2015 · Pamela Cabarcos, Iván Álvarez, et al. · Analytical and Bioanalytical Chemistry · 85
Optimization of ultrasound assisted dispersive liquid-liquid microextraction of six antidepressants in human plasma using experimental design
2016 · P. Fernández, V. Taboada, et al. · Journal of Pharmaceutical and Biomedical Analysis · 62
Solid-phase microextraction for the determination of cocaine and cocaethylene in human hair by gas chromatography–mass spectrometry
2005 · Ana María Bermejo, Patricia López, et al. · Forensic Science International · 62
Determination of cocaine and cocaethylene in plasma by solid-phase microextraction and gas chromatography–mass spectrometry
2006 · Iván Álvarez, Ana María Bermejo, et al. · Journal of Chromatography B · 58
Determination of fentanyl, metabolite and analogs in urine by GC/MS
2010 · Sabina Strano‐Rossi, Iván Álvarez, et al. · Journal of Applied Toxicology · 45
Microwave-assisted extraction: a simpler and faster method for the determination of ethyl glucuronide in hair by gas chromatography–mass spectrometry
2008 · Iván Álvarez, Ana María Bermejo, et al. · Analytical and Bioanalytical Chemistry · 41
Matrix solid-phase dispersion on column clean-up/pre-concentration as a novel approach for fast isolation of abuse drugs from human hair
2010 · Martha Míguez-Framil, Antonio Moreda-Piñeiro, et al. · Journal of Chromatography A · 37
Analysis of Six Benzodiazepines in Vitreous Humor by High-Performance Liquid Chromatography-Photodiode-Array Detection
2010 · P. Cabarcos, M.J. Tabernero, et al. · Journal of Analytical Toxicology · 34
Simultaneous determination of new-generation antidepressants in plasma by gas chromatography–mass spectrometry
2012 · Elisa Pietracci, Ana-María Bermejo, et al. · Forensic Toxicology · 33
Determination of Seven Antidepressants in Pericardial Fluid by Means of Dispersive Liquid–Liquid Microextraction and Gas Chromatography–Mass Spectrometry
2021 · P Cabarcos-Fernández, M J Tabernero-Duque, et al. · Journal of Analytical Toxicology · 31
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Experimental design for optimization of microwave-assisted extraction of benzodiazepines in human plasma
2010 · P. Fernández, C. Vázquez, et al. · Analytical and Bioanalytical Chemistry · 31
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Determination of cocaine and heroin with their respective metabolites in meconium by gas chromatography‐mass spectrometry
2007 · P. López, A. M. Bermejo, et al. · Journal of Applied Toxicology · 29
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Determination of benzodiazepines in pericardial fluid by gas chromatography–mass spectrometry
2018 · I. Álvarez-Freire, P. Brunetti, et al. · Journal of Pharmaceutical and Biomedical Analysis · 24
Cocaine and Opiates Use in Pregnancy: Detection of Drugs in Neonatal Meconium and Urine
2009 · P. Lopez, A. M. Bermejo, et al. · Journal of Analytical Toxicology · 24
Microwave assisted extraction for the determination of ethyl glucuronide in urine by gas chromatography‐mass spectrometry
2008 · Iván Álvarez Freire, Ana María Bermejo Barrera, et al. · Journal of Applied Toxicology · 24
Hair testing for cocaine and metabolites by GC/MS: criteria to quantitatively assess cocaine use
2012 · O. López‐Guarnido, I. Álvarez, et al. · Journal of Applied Toxicology · 23
Determination of Cocaine and Heroin with Their Respective Metabolites in Human Hair using Gas Chromatography‐Mass Spectrometry
2006 · P. López, A. M. Bermejo, et al. · Analytical Letters · 19
Simultaneous Determination of Methadone, Heroin, Cocaine and their Metabolites in Urine by GC‐MS
2006 · I. Álvarez, F. Palos, et al. · Analytical Letters · 17
Chromatographic determination of benzodiazepines in vitreous humor after microwave-assisted extraction
2013 · Purificación Fernández, Marta Lago, et al. · Analytical Methods · 15
A new method for quantifying prenatal exposure to ethanol by microwave-assisted extraction (MAE) of meconium followed by gas chromatography–mass spectrometry (GC–MS)
2012 · Pamela Cabarcos, María Jesús Tabernero, et al. · Analytical and Bioanalytical Chemistry · 15
Analysis of Fatty Acid Ethyl Esters in Hair by Headspace Solid-Phase Microextraction (HS-SPME) and Gas Chromatography-Mass Spectrometry (GC-MS)
2009 · Pamela Cabarcos, Iván Álvarez, et al. · Analytical Letters · 14
Quantitative determination of clozapine in plasma using an environmentally friendly technique
2022 · P. Cabarcos-Fernández, I. Álvarez-Freire, et al. · Microchemical Journal · 12
Statistical Analysis of Toxicological Data of Victims of Traffic Accidents in Galicia (Spain)
2023 · Iván Alvarez-Freire, Olga López-Guarnido, et al. · Prevention Science · 11
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Development and Validation of a Sonication-Assisted Dispersive Liquid–Liquid Microextraction Procedure and an HPLC-PDA Method for Quantitative Determination of Zolpidem in Human Plasma and Its Application to Forensic Samples
2024 · Inés Sánchez-Sellero, Pamela Cabarcos-Fernández, et al. · Molecules · 10
Simple Method for the Determination of THC and THC-COOH in Human Postmortem Blood Samples by Gas Chromatography—Mass Spectrometry
2023 · Ivan Álvarez-Freire, Anxa Valeiras-Fernández, et al. · Molecules · 8
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Works count: 49
Citation count: 835
H-index: 17
I10-index: 24
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