quadrupole mass spectrometry samples
Ultra performance liquid chromatography quadrupole/time of flight mass spectrometry analysis of the impact of processing on toxic components of Kansui Radix
... To compare the vinegar-processed and raw Gansui sam- ples, global chemical profiling was conducted by UHPLC UHD Q-TOF MS in positive and negative ion modes. The representative total ion current (TIC) chromato- grams of ...
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High-throughput analysis of amino acids in plant materials by single quadrupole mass spectrometry
... and mass spectrometry enables amino acids to be analysed significantly faster than by older methods using UV or fluorescent ...the mass detection, the typi- cal cycle time (time from injection to ...
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Liquid Chromatography - Quadrupole Time-of-Flight Mass Spectrometry Analysis of Disperse Dyes for the Development of a Forensic Dye Database.
... diluted samples were filtered using 1-mL disposable Luer-slip plastic syringes and PVDF filters (Fisher Scientific) into 2-mL Agilent amber screw top glass LC vials (Part number: 5188-6535) for ...
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Structure Elucidation of Anthraquinone Dyes by Using Electrospray Quadrupole - Time-of-Flight Tandem Mass Spectrometry
... 4. Samples are ionized from an ambient ion sources, such as ESI or APCI, and ions travel through an ion guide (Figure 4) into a quadrupole, where ions can be selected for tandem mass ...
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Improved methods of tandem mass spectrometry for proteomics applications in a quadrupole ion trap mass spectrometer
... One aspect worth mentioning when considering the change in ion abundance from space charge is the initial concentration of peptides in solution. Figure 5-4 shows the abundance for the peptides acetyl-RDGS (m/z 476), ...
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Detection and Mapping of Cannabis Use in Hair Samples Using Mass Spectrometry
... . .......................... 103 Figure 2-22. Experimental set up of cannabis smoke exposure experiments. ............. 104 Figure 2-23. MALDI-MSP mass spectrum of A) 3-year-old plant extract. B) Freshly prepared ...
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Original Article LC-MS-based lipidomic analysis of serum samples from patients with rheumatoid arthritis
... Abstract: Rheumatoid arthritis (RA) is a common chronic inflammatory disorder characterized by inflammation of the synovium, which resulting in joint damage, chronic pain, and disability. Lipid metabolism in RA patients ...
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Matrix assisted ionisation in vacuum mass spectrometry and imaging on a modified quadrupole quadrupole time of flight mass spectrometer
... mm. Samples were imaged on an Applied Biosystems QStar XL mass spectrometer in raster imaging mode at 1 mm horizontal and vertical spacing (pixel ...
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A Mass Spectrometric Study of Kratom Compounds by Direct Infusion Electrospray Ionization Triple Quadrupole Mass Spectrometry
... urine samples were stored at −20˚C until analysis. Urine samples were thawed and ...urine samples were centrifuged at 15,000 rpm speed for 15 min and the supernatant was transferred to a clue ...
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Ultra performance liquid chromatography quadrupole\time of flight mass spectrometry with multivariate statistical analysis for exploring potential chemical markers to distinguish between raw and processed Rheum palmatum
... time-of-flight mass spectrometry (UPLC-QTOF-MS) is a newly developed technique that provides rapid and efficient access to detailed information pertaining to the nature of specific components within complex ...
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Determination of five flavonoids in different parts of Fordia cauliflora by ultra performance liquid chromatography/triple-quadrupole mass spectrometry and chemical comparison with the root of Millettia pulchra var. laxior
... with mass spectrometry technology has been found to be a superior method for the quality evaluation of herbal medicines due to the high resolution and detection sen- sitivity ...triple- quadrupole ...
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Selective Drug Screening Method Development Using Nanofibers and Microfluidics Coupled to a Quadrupole Time-of-Flight Mass Spectrometry.
... Table 2 below shows the selectivity comparison among PVA, PAN, and direct injection. Experiments were replicated three times. Utilized drug standards were purchased from Cerilliant and then diluted to 100 ng/mL. ...
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Design of Safer Flame Retardant Textiles through Inclusion Complex Formation with Cyclodextrins: A Combined Experimental and Modeling Study.
... tandem mass spectrometry (quadrupole-time-of-flight, or Q-TOF) is employed to provide a unique way to study these ICs when in ...obtained mass spectrometry results confirm the ...
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An optimized method for simultaneous determination of Melamine and Cyanuric Acid in animal tissues by Liquid Chromatography Triple Quadrupole Mass Spectrometry
... chromatography-triple quadrupole mass spectrometry (LC/MS/MS) on Waters Atlantis HILIC ...of samples from pharmacokinetic studies of MEL and CYA in ...
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Simultaneous and absolute quantification of nucleoside triphosphates using liquid chromatography–triple quadrupole tandem mass spectrometry
... chromatography-tandem mass spec- trometry (LC-MS/MS) have been ...in samples for generating calibration curves or a standard addition method to correct for a matrix ...
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Complex mixture analysis by liquid chromatography-mass spectrometry
... for samples whose detection limits are controlled by the background noise from the sample ...first quadrupole thereby improving the signal-to-noise ratio for a particular species and hence overall detection ...
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STABILITY EVALUATION OF TARTRAZINE BY LIQUID CHROMATOGRAPHY DIODE ARRAY DETECTOR AND HIGH RESOLUTION ELECTRON SPRAY IONIZATION QUADRUPOLE TIME OFFLIGHT MASS SPECTROMETRY/MASS SPECTROMETRY ANALYSIS
... For MS analysis, all the samples (5 µL) were injected directly into the source by flow injection method using ammonium acetate (0.05 M, pH 4.5 adjusted with acetic acid) and acetonitrile (50: 50 V/V) as mobile ...
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Discrimination of Radix Polygoni Multiflori from different geographical areas by UPLC-QTOF/MS combined with chemometrics
... RPM samples from 10 counties of 4 provinces were analyzed using ultra-high performance liquid chromatography quadrupole time of flight mass spectrometry ...RPM samples and find chemical ...
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Analysis of laser ablation plumes by laser induced breakdown spectroscopy and quadrupole mass spectrometry: a comparative study
... The apparatus shown schematically in Fig 1, allows the simultaneous LIBS and LA-MS investigation of solid or gas analytes. The system features a Surelite Continuum Nd:YAG laser, frequency doubled to produce an output at ...
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Determination of Giazepam Aminobenzophenones by two –dimensional gas chromatography mass spectrometry (GC GC MS) in urine
... In this study, an evaluation of suitable extraction and clean up techniques for benzophenones of gidazepam in urine samples was done. Solvent extraction methods were compared with solid-phase extraction using Bond ...
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