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Hybrid silica monolith for microextraction by packed sorbent to determine drugs from plasma samples by liquid chromatography-tandem mass spectrometry.

• Israel Donizeti de Souza, Diego Soares Domingues, Maria Eugênia Costa Queiroz
• Talanta
• 2015

The present study (1) reports on the synthesis of two hybrid silica monoliths functionalized with aminopropyl or cyanopropyl groups by the sol-gel process; (2) evaluates these monoliths as selective… (More)

Detection of roasted and ground coffee adulteration by HPLC and by amperometric and by post-column derivatization UV-Vis detection.

• Diego Soares Domingues, Elis Daiane Pauli, +4 authors Suzana Lucy Nixdorf
• Food chemistry
• 2014

Coffee is one of the most consumed beverages in the world. Due to its commercial importance, the detection of impurities and foreign matters has been a constant concern in fraud verification,… (More)

Analysis of drugs in plasma samples from schizophrenic patients by column-switching liquid chromatography-tandem mass spectrometry with organic-inorganic hybrid cyanopropyl monolithic column.

• Diego Soares Domingues, Israel Donizeti de Souza, Maria Eugênia Costa Queiroz
• Journal of chromatography. B, Analytical…
• 2015

This study reports on the development of a rapid, selective, and sensitive column-switching liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to analyze sixteen drugs (antidepressants,… (More)

Column switching UHPLC-MS/MS with restricted access material for the determination of CNS drugs in plasma samples.

• Vinicius Ricardo Acquaro, Diego Soares Domingues, Maria Eugênia Costa Queiroz
• Bioanalysis
• 2017

BACKGROUND Polypharmacy is a common practice in schizophrenia. Consequently, therapeutic drug monitoring is usually adopted to maintain the concentrations of the drugs in the plasma within a targeted… (More)

Selective solid-phase extraction using molecularly imprinted polymers for analysis of venlafaxine, O-desmethylvenlafaxine, and N-desmethylvenlafaxine in plasma samples by liquid chromatography-tandem…

• Luis Felippe Cabral Miranda, Diego Soares Domingues, Maria Eugênia Costa Queiroz
• Journal of chromatography. A
• 2016

This paper focuses on the development of a novel miniaturized molecularly imprinted solid-phase extraction (MISPE) and ultra high performance liquid chromatography-tandem mass spectrometry… (More)

Simultaneous determination of amino acids and neurotransmitters in plasma samples from schizophrenic patients by hydrophilic interaction liquid chromatography with tandem mass spectrometry.

• Diego Soares Domingues, Eduardo José Crevelin, Luiz Alberto Beraldo de Moraes, Jaime Eduardo Cecílio Hallak, José Alexandre de Souza Crippa, Maria Eugênia Costa Queiroz
• Journal of separation science
• 2015

A sensitive, reproducible, and rapid method was developed for the simultaneous determination of underivatized amino acids (aspartate, serine, glycine, alanine, methionine, leucine, tyrosine, and… (More)

Determination of Drugs in Plasma Samples by High-Performance Liquid Chromatography-Tandem Mass Spectrometry for Therapeutic Drug Monitoring of Schizophrenic Patients.

• Diego Soares Domingues, Mônia Aparecida Lemos Pinto, Israel Donizeti de Souza, Jaime Eduardo Cecílio Hallak, José Alexandre de Souza Crippa, Maria Eugênia Costa Queiroz
• Journal of analytical toxicology
• 2016

This work describes the development of a simple, sensitive and selective method based on high-performance liquid chromatography coupled to tandem mass spectrometry (LC-MS-MS) to determine… (More)

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