RT Journal Article
T1 Ultrasound assisted membrane-assisted solvent extraction for the determination of antidepressants in pericardial fluid by gas chromatography-mass spectrometry
A1 Cabarcos Fernández, Pamela
A1 Gesia, L.
A1 Moreda Piñeiro, Antonio
A1 Fernández Liste, Alberto
A1 Álvarez Freire, Iván
A1 Tabernero Duque, María Jesús
A1 Bermejo Barrera, Ana María
K1 Membrane-assisted solvent extraction
K1 Pericardial fluid
K1 Gas chromatography-mass spectrometry
K1 Antidepressants
K1 Membrane
AB The current trend in the development of analytical methods focuses on the miniaturization of sample preparation techniques, avoiding the consumption of large volumes of organic solvents and replacing the more harmful ones with less toxic solvents. In order to bring Forensic Toxicology closer to this trend, a simple method based on membrane-assisted solvent extraction (MASE) has been developed for the first time for the determination of three antidepressants (ATDs) using pericardial fluid as an alternative biological sample to blood. The analytes under study were later determined by gas chromatography-mass spectrometry (GC–MS). The optimized extraction procedure consisted of using 400 µL of n-hexane as an extractant solvent, placed inside a polypropylene (PP) membrane, and 4 mL of pericardial fluid (pH adjusted at 11). Ultrasound assistance (50–60 Hz, room temperature, 30 min) was used to favor analytes mass transfer from the aqueous phase to the organic phase. The nhexane extract was further evaporated to dryness and reconstituted with 40 µL of methanol, achieving a preconcentration factor of 100. Validation was performed in accordance with FDA guidance as a reference. Lower limit of quantification (LOQ) values of 5 ng/mg were achieved for each ATD under study. The recoveries were higher than 90 % andthevalues of accuracy and precision did not exceed the maximum allowed error of 20 % for the LOQ or 15 % for the remaining concentration levels. Finally, the method was successfully applied to 14 real cases.
PB Elsevier
SN 0026-265X
YR 2025
FD 2025
LK https://hdl.handle.net/10347/40922
UL https://hdl.handle.net/10347/40922
LA eng
NO Cabarcos-Fernández, P., Gesia, L., Moreda-Piñeiro, A., Fernández-Liste, A., Álvarez-Freire, I., Tabernero-Duque, M. J.,& Bermejo-Barrera, A.M. (2025). Ultrasound assisted membrane-assisted solvent extraction for the determination of antidepressants in pericardial fluid by gas chromatography-mass spectrometry. Microchemical Journal, 208. https://doi.org/10.1016/J.MICROC.2024.112438
DS Minerva
RD 28 abr 2026