Journal Article

Simultaneous Determination of Nontricyclic Antidepressants in Human Plasma by Solid-Phase Microextraction and Liquid Chromatography (SPME-LC)

Bruno José Gonçalves Silva, Regina Helena Costa Queiroz and Maria Eugênia Costa Queiroz

in Journal of Analytical Toxicology

Volume 31, issue 6, pages 313-320
Published in print July 2007 | ISSN: 0146-4760
Published online July 2007 | e-ISSN: 1945-2403 | DOI: http://dx.doi.org/10.1093/jat/31.6.313
Simultaneous Determination of Nontricyclic Antidepressants in Human Plasma by Solid-Phase Microextraction and Liquid Chromatography (SPME-LC)

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A sensitive, selective, and reproducible solid-phase microextraction and liquid chromatographic (SPME-LC) method for simultaneous determination of mirtazapine, citalopram, paroxetine, fluoxetine, and sertraline in human plasma was developed, validated, and further applied to analyze plasma samples obtained from patients with depression. Important factors in the optimization of SPME efficiency are discussed, including the fiber coating, extraction time, pH, ionic strength, influence of plasma proteins, and desorption conditions. The limit of quantitation of the nontricyclic antidepressants in plasma varied from 25 to 50 ng/mL with a coefficient of variation lower than 5%. The response of the SPME-LC method for most of the drugs was linear over a dynamic range of 50 to 500 ng/mL, with all of them having correlation coefficients greater than 0.9970. The performance of the SPME-LC method allowed the nontricyclic antidepressants analyses in therapeutic levels.

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Subjects: Medical Toxicology ; Toxicology (Non-medical)

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