Simultaneous determination of the quantity and isotopic signature of dissolved organic matter from soil water using high-performance liquid chromatography/isotope ratio mass spectrometry

2011 ◽  
Vol 26 (2) ◽  
pp. 173-180 ◽  
Author(s):  
Andrea Scheibe ◽  
Lars Krantz ◽  
Gerd Gleixner
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Organic Matter ◽  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
Isotope Ratio ◽  
High Performance ◽  
Isotope Ratio Mass Spectrometry ◽  
Isotopic Signature

Comparison Study on the Contents of Eight Flavonoids in three Different Processed Products of Scutellariae Radix using Ultra-high Performance Liquid Chromatography Coupled With Triple-Quadrupole Mass Spectrometry

2020 ◽  
Vol 16 (6) ◽  
pp. 690-697
Author(s):  
Yuedong Yang ◽  
Hao Zhi ◽  
Baofei Yan ◽  
Yi Tian ◽  
Jianping Shen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
High Performance ◽  
Triple Quadrupole ◽  
Column Temperature ◽  
Scutellariae Radix ◽  
Total Percentage

Background: The simultaneous determination of multiple components in a sample is an important factor in the quality control of traditional Chinese medicines and can give an indication of potential clinical applications. Introduction: A rapid and sensitive method has been introduced for the simultaneous quantitative analysis of eight bioactive flavonoid constituents from Scutellariae Radix using ultra-high performance liquid chromatography coupled with triple quadrupole tandem mass spectrometry. Methods: The separation was performed on a Waters Acquity UPLC C18 column (2.1 mm×100 mm, 1.7 μm), under optimized mass spectrometry conditions, with a flow rate of 0.3 mL/min. The column temperature was maintained at 35°C and the injection volume was 3 μL. Results: The method showed a good linear relationship of each component; all R2 values were above 0.9990 in the experiment. The RSDs of the precision test, repeatability test, stability test and recovery test were all not more than 2.86 %. We found that the total percentage amounts of the eight flavonoids were 22.19%, 18.63% and 10.86% in Raw Scutellariae Radix (RSR), Wine Scutellaria Radix (WSR) and Scutellaria Radix Charcoal (SRC) respectively. Conclusion: The method was successfully applied to the simultaneous determination of the eight bioactive flavonoids of Raw Scutellariae Radix, Wine Scutellaria Radix and Scutellaria Radix Charcoal.

Simultaneous determination of albendazole metabolites, praziquantel and its metabolite in plasma by high-performance liquid chromatography–electrospray mass spectrometry

2007 ◽  
Vol 44 (2) ◽  
pp. 558-563 ◽  
Author(s):  
Pierina Sueli Bonato ◽  
Anderson Rodrigo Moraes de Oliveira ◽  
Fernando José Malagueño de Santana ◽  
Bruno José Dumet Fernandes ◽  
Vera Lucia Lanchote ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
High Performance ◽  
Electrospray Mass Spectrometry
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