Browsing University of Waterloo by Author "Gómez-Ríos, Germán Augusto"
Now showing items 1-7 of 7
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Biocompatible Solid-Phase Microextraction Nanoelectrospray Ionization: An Unexploited Tool in Bioanalysis
Gómez-Ríos, Germán Augusto; Reyes-Garcés, Nathaly; Bojko, Barbara; Pawliszyn, Janusz (American Chemical Society, 2015-12-09)In recent years, different geometrical configurations of solid-phase microextraction (SPME) have been directly coupled to mass spectrometry, resulting in benefits such as diminishing matrix effects, improvement of detection ... -
Development of Needle Trap Technology for On-Site Determinations: Active and Passive Sampling
Asl-Hariri, Saba; Gómez-Ríos, Germán Augusto; Gionfriddo, Emanuela; Dawes, Peter; Pawliszyn, Janusz (American Chemical Society, 2014-05-19)This study presents a thorough evaluation of new prototypes of extended tip needle trap devices (NT), as well as their application to in situ sampling of biological emissions and active/passive on-site sampling of indoor ... -
Development of Needle Trap Technology for On-Site Determinations: Active and Passive Sampling
Asl-Hariri, Saba; Gómez-Ríos, Germán Augusto; Gionfriddo, Emanuela; Dawes, Peter; Pawliszyn, Janusz (ACS, 2014)This study presents a thorough evaluation of new prototypes of extended tip needle trap devices (NT), as well as their application to in situ sampling of biological emissions and active/passive on-site sampling of indoor ... -
Direct coupling of solid phase microextraction with electrospray ionization mass spectrometry: A Case study for detection of ketamine in urine
Hu, Bin; Zheng, Bo; Rickert, Daniel; Gómez-Ríos, Germán Augusto; Bojko, Barbara; Pawliszyn, Janusz; Yao, Zhong-Ping (Elsevier, 2019-10-10)Electrospray ionization mass spectrometry (ESI-MS) is a commonly used technique for analysis of various samples. Solid phase microextraction (SPME) is a simple and efficient technique that combines both sampling and sample ... -
Fast quantitation of opioid isomers in human plasma by differential mobility spectrometry/mass spectrometry via SPME/open-port probe sampling interface
Liu, Chang; Gómez-Ríos, Germán Augusto; Schneider, Bradley B.; Le Blanc, J. C. Yves; Reyes-Garcés, Nathaly; Arnold, Don W.; Covey, Thomas R.; Pawliszyn, Janusz (Elsevier, 2017-10-23)Mass spectrometry (MS) based quantitative approaches typically require a thorough sample clean-up and a decent chromatographic step in order to achieve needed figures of merit. However, in most cases, such processes are ... -
Quantitative analysis of biofluid spots by coated blade spray mass spectrometry, a new approach to rapid screening
Boyaci, Ezel; Gómez-Ríos, Germán Augusto; Pawliszyn, Janusz; Poole, Justen J.; Tascon, Marcos; Reyes-Garcés, Nathaly (Springer Nature, 2017-11-23)This study demonstrates the quantitative capabilities of coated blade spray (CBS) mass spectrometry (MS) for the concomitant analysis of multiple target substances in biofluid spots. In CBS-MS the analytes present in a ... -
Rapid determination of immunosuppressive drug concentrations in whole blood by coated blade spray-tandem mass spectrometry (CBS-MS/MS)
Gómez-Ríos, Germán Augusto; Tascon, Marcos; Reyes-Garcés, Nathaly; Boyaci, Ezel; Poole, Justen J.; Pawliszyn, Janusz (Elsevier, 2018-01-25)Coated Blade Spray (CBS) is a technology that efficiently integrates sample preparation and direct coupling to mass spectrometry (MS) on a single device. In this article, we present CBS-tandem mass spectrometry (CBS-MS/MS) ...