Quantitative determination of the main aliphatic carboxylic acids in wood kraft black liquors by high-performance liquid chromatography–mass spectrometry

2007 ◽  
Vol 1139 (2) ◽  
pp. 263-270 ◽  
Author(s):  
Jaana Käkölä ◽  
Raimo Alén ◽  
Hannu Pakkanen ◽  
Rose Matilainen ◽  
Kaisa Lahti
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Carboxylic Acids ◽  
High Performance ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Aliphatic Carboxylic Acids

scholarly journals THe quantitative determination of sildenafil in human plasma by high performance liquid chromatography - mass spectrometry (lc-ms/ms)

2016 ◽  
Vol 0 (4 (4)) ◽  
pp. 13-23
Author(s):  
Игорь Эрнестович Кузнецов ◽  
Елена Алексеевна Науменко ◽  
Наталия Константиновна Резниченко ◽  
Андрей Юрьевич Костюк ◽  
Роман Прокопович Савяк ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Human Plasma ◽  
High Performance ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

scholarly journals A HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY METHOD DEVELOPMENT FOR THE QUANTITATIVE DETERMINATION OF ENALAPRIL MALEATE FROM CACO-2 CELL MONOLAYERS

2018 ◽  
Vol 11 (7) ◽  
pp. 89
Author(s):  
Liliya Logoyda
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Formic Acid ◽  
High Performance ◽  
Liquid Chromatography Mass Spectrometry ◽  
Enalapril Maleate ◽  
Cell Monolayers ◽  
Chromatography Mass Spectrometry

Objective: A simple, rapid high-performance liquid chromatography-mass spectrometry (HPLC MS/MS) method was developed for the determination of enalapril maleate from confluent Caco-2 monolayers and aqueous solution.Methods: Chromatography was achieved on Discovery C18, 50×2.1 mm, 5 μm column. Samples were chromatographed in a gradient mode (eluent A [acetonitrile-water-formic acid, 5: 95:0.1 v/v] and eluent B [acetonitrile-formic acid, 100:0.1 v/v]). The initial content of the eluent B is 0%, which increases linearly by 1.0 min to 100% and 1.01 min returns to the initial 0%. The mobile phase was delivered at a flow rate of 0.4 ml/min into the mass spectrometer ESI chamber. The sample volume was 5 μl.Results: Under these conditions, enalapril maleate was eluted at 1.52 min. According to the Caco-2 test results, enalapril showed low permeability. It should be noted that the recovery value for enalapril is 100.62 %. Low in vitro permeability data for enalapril are in good agreement with the literature data.Conclusion: From results of the analysis, it can be concluded that developed method is simple and rapid for determination of enalapril maleate from confluent Caco-2 monolayers and aqueous solution. Acquired results demonstrate that proposed strategy can be effortlessly and advantageously applied for examination of enalapril from Caco-2 cell monolayers.

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