LC-MS - liquid chromatography-mass spectrometry
Detection of SPM-1-Producing Pseudomonas aeruginosa and Class D beta-Lactamase-Producing Acinetobacter baumannii Isolates by Use of Liquid Chromatography-Mass Spectrometry and Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry
... The LC-MS and MALDI-TOF MS assays were performed by incubating fresh bacterial inoculums from Mueller-Hinton agar plates (Oxoid, Basingstoke, United Kingdom) in a buffer-adjusted solution (20 mM ...
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J. Braz. Chem. Soc. vol.19 número3
... by liquid chromatography – mass spectrometry (LC-MS), and a study of the fragmentation patterns of selected flavonoids was conducted using orthogonal acceleration time-of-flight ...
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Simultaneous determination of amoxicillin and clavulanic acid in the human plasma by high performance liquid chromatography: Mass spectrometry (UPLC/MS)
... Razvijena je osetljiva i specifična metoda tečne hro- matografije ultra performansi u kombinaciji sa elektrosprej jonizacijom i masenom spektrometrijom (UPLC/MS) koja je primenjena za spektralnu identifikaciju i ...
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Braz. J. Pharm. Sci. vol.50 número1
... Considering these data, new approaches to this species are necessary. Therefore, this work aimed at evaluating pharmacological and phytochemical profiles of G. manicata. For this, the antimicrobial properties, ...
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Eicosanoid profiling in an orthotopic model of lung cancer progression by mass spectrometry demonstrates selective production of leukotrienes by inflammatory cells of the microenvironment.
... used liquid chromatography coupled with tandem mass spectrometry (LC/MS/MS) to quantitate eicosanoids produced during lung tumor progression in an orthotopic ...
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Measurement of serum estrogen and estrogen metabolites in pre- and postmenopausal women with osteoarthritis using high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry
... specific mass spec- tra. Although LC/MS methods (19-21) measure more biochemical targets in a single assay than HPLC-ESI-MS/ MS, the multiple reaction-monitoring quantitative model of ...
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Standard and sample preparation
... by liquid chromatography-tandem mass spectrometry (LC-MS/MS) can be used successfully for the simultaneous extraction of 19 kinds of pesticides and 16 PPCPs from water ...
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J. Braz. Chem. Soc. vol.22 número3
... Liquid chromatography- electrospray ionization - tandem mass spectrometry (LC-ESI-MS/MS) was used to simultaneous determination of ten sulfonamide (SAs) residues ...
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J. Braz. Chem. Soc. vol.26 número8
... pheochromocytoma. Liquid chromatography tandem mass spectrometry (LC-MS/MS) method has been developed for the determination of catecholamines and metanephrines in human ...
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J. Braz. Chem. Soc. vol.21 número8
... and liquid chromatography coupled to electrospray ionization tandem mass spectrometry (LC-ESI-MS-MS) was developed and validated for the determination and conirmation of ...
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Compounds by Gas Chromatography-Mass Spectrometry
... gas chromatography coupled to quadrupole mass spectrometry detector (GC-qMS) on a Shimadzu equipment, model QP5050-A (Kyoto, Japan), using a DB-5 capillary column (60 m length, ...
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Braz. J. Pharm. Sci. vol.51 número2
... Saxagliptin is a potent and selective inhibitor of the enzyme dipeptidyl peptidase 4. It is effective in the treatment of type 2 diabetes mellitus because it stimulates the pancreas to produce insulin. In the present ...
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Braz. J. Pharm. Sci. vol.49 número1
... Ku et al. (2011) described a more sensitive and rapid analysis of udenail in rat plasma, using an LC-MS/ MS system, aiming to replace the previous methods. The authors justify their work due to the ...
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Simultaneous Determination of Underivatized Vitamin B1 and B6 in Whole Blood by Reversed Phase Ultra High Performance Liquid Chromatography Tandem Mass Spectrometry.
... In the new UHPLC-MS/MS method we used simple sample preparation, no derivatization of TDP and PLP and added internal standards to correct for sample handling. The method can be easily implemented in routine ...
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Análise multirresíduos de pesticidas em tomate utilizando LC-MS/MS e avaliação dos...
... Uma das técnicas de preparo de amostras mais utilizada é a extração líquido- líquido (liquid-liquid extraction - LLE) (BOTITSI; ECONORNOU; TSIPI, 2007; LAMBROPOULOU; ALBANIS, 2007; LIU et al., 2011). A LLE ...
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Gas chromatography-mass spectrometry analysis
... The culture was inoculated into nutrient broth (pH 8.6) in the conical flask and incubated at 37ºC for 48-72 h. The bacterial cells were separated from the liquid medium by using a refrigerated centrifuge at ...
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Especiação química de arsênio em samambaia utilizando espectrometria de massas com ionização ambiente
... ionization mass spectrometry), DESI-MSI (desorption electrospray ionization mass spectrometry imaging) e PS-MS (paper spray mass spectrometry), são excelentes técnicas ...
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J. Braz. Chem. Soc. vol.22 número8
... Due to the lack of literature reports concerning the use of MSPD as an extraction technique for pesticides belonging to different chemical classes from medicinal plants (different plants and herbs exhibit different ...
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Int. Arch. . vol.19 número2
... Gas Chromatography/Mass Spectrometry of the High- Performance Thin-Layer Chromatography Zones Each lipid fraction extracted from the HPTLC plate was redissolved in chloroform:methanol (500 ...
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A method for analysis of vanillic acid in polar ice cores
... reversed-phase liquid chromatography (HPLC) and detected using electrospray ionization–triple quadrupole mass spectrometry ...by mass) and an analytical pre- cision of ±10 ...
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