首页|Biological matrix compatible porous thin film for quick extraction of drugs of abuse from urine prior to liquid chromatography-mass spectrometry analysis
Biological matrix compatible porous thin film for quick extraction of drugs of abuse from urine prior to liquid chromatography-mass spectrometry analysis
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NSTL
Elsevier
? 2022 Elsevier B.V.An efficient analytical method is developed using a porous sorptive polymer for thin film microextraction (PSP-TFME) of 8 model drugs from human urine samples. The analysis is conducted with ultra high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). The composition of the porous extraction phase, prepared on a stainless steel substrate, has been optimized for basic drugs of abuse and comprises methacrylic acid (MMA) as the monomer and ethylene glycol methacrylate (EGDMA) as the crosslinker. Factors influencing the analyte recovery and method precision (i.e., sample agitation, pH, extraction and washing time, desorption solvent and time) were assessed. The optimized method includes 5 min of direct immersion of the device into the sample, followed by a quick wash in water (1 min) to remove matrix interferences, and then 5 min in acidified methanol for analyte desorption. The extraction devices demonstrated acceptable inter-device variability (2.9–9.3 %RSD for 8 analytes and n = 10 devices) and no detectable difference between batches of devices (p > 0.05 for a 2-sample t-test). The analytical method was linear over a pharmacologically relevant range for each drug (i.e., 0.05–100 ng mL?1 for MDMA and methadone and 2.5–500 ng mL?1 for morphine with R2 varied from 0.9960 to 0.9996). A matrix effect study showed the devices have a high tolerance for complex variable biological matrices. The method also demonstrated excellent data accuracy in the range of 85.3–117.2% for intra-day assays and 88.8–117.9% for inter-day assays. The precision of the method was acceptable and in the range of 0.9–18.6% for intra- and 2.8–16.4% for inter-day assays, respectively.
Drugs of abuseHigh throughputLiquid chromatography-mass spectrometryPorous polymersSample preparationThin film microextraction
Azizi A.、Shahhoseini F.、Bottaro C.S.
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Department of Chemistry Memorial University of Newfoundland
NSTL
Elsevier
