Results 11 to 20 of about 10,542,246 (288)

Selected Ion Flow-Drift Tube Mass Spectrometry: Quantification of Volatile Compounds in Air and Breath [PDF]

open access: yesAnalytical Chemistry, 2015
A selected ion flow-drift tube mass spectrometric analytical technique, SIFDT-MS, is described that extends the established selected ion flow tube mass spectrometry, SIFT-MS, by the inclusion of a static but variable E-field along the axis of the flow tube reactor in which the analytical ion-molecule chemistry occurs.
Spesyvyi, A. (Anatolii)   +2 more
openaire   +5 more sources

The Use of Selected Ion Flow Tube-Mass Spectrometry Technology to Identify Breath Volatile Organic Compounds for the Detection of Head and Neck Squamous Cell Carcinoma: A Pilot Study [PDF]

open access: yesMedicina, 2019
Background: Head and neck squamous cell carcinoma (HNSCC) is the sixth most common form of cancer worldwide, with approximately 630,000 new cases diagnosed each year.
Dhinashini Chandran   +5 more
doaj   +2 more sources

Cyanogenesis in Macadamia and Direct Analysis of Hydrogen Cyanide in Macadamia Flowers, Leaves, Husks, and Nuts Using Selected Ion Flow Tube–Mass Spectrometry [PDF]

open access: yesFoods, 2020
Macadamia has increasing commercial importance in the food, cosmetics, and pharmaceutical industries. However, the toxic compound hydrogen cyanide (HCN) released from the hydrolysis of cyanogenic compounds in Macadamia causes a safety risk. In this study,
Hardy Z. Castada   +3 more
doaj   +2 more sources

Repeatability of the measurement of exhaled volatile metabolites using selected ion flow tube mass spectrometry [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2010
Selected ion flow tube mass spectrometry, SIFT-MS, has been used to determine the repeatability of the analysis of volatile metabolites within the breath of healthy volunteers, with emphasis on the influence of sampling methodology. Baseline instrument specific coefficients of variability for examined metabolites were as follows: acetone (1%), ammonia (
Boshier, Piers R.   +2 more
openaire   +4 more sources

Quantification of volatile metabolites in exhaled breath by selected ion flow tube mass spectrometry, SIFT-MS [PDF]

open access: yesClinical Mass Spectrometry, 2020
Selected ion flow tube mass spectrometry, SIFT-MS, is a non-separative method for direct quantitative analyses of volatile compounds, VOCs, in air and humid breath based on chemical ionization. Selected reagent ions, either H3O+, NO+ or O2 + (non-reactive with major components of air), ionize analyte molecules during a defined time in a flow tube by ...
Španěl, P. (Patrik), Smith, D.
openaire   +5 more sources

Evaluation of Solvent Compatibilities for Headspace-SIFT-MS Analysis of Pharmaceutical Products

open access: yesAnalytica, 2023
Procedures for determination of the residual solvent and volatile impurity content in pharmaceutical products usually rely on dissolution in a solvent, followed by headspace-gas chromatography (HS-GC) analysis. Whereas chromatographic systems can utilize
Mark J. Perkins   +2 more
doaj   +1 more source

Pharmaceutical Residual Solvent Analysis: A Comparison of GC-FID and SIFT-MS Performance

open access: yesAppliedChem, 2023
Residual solvents in pharmaceutical excipients, active pharmaceutical ingredients (APIs), and finished products are usually analyzed using gas chromatography (GC)-based techniques according to a pharmacopeial monograph, such as the United States ...
Mark J. Perkins   +3 more
doaj   +1 more source

Formaldehyde and glyoxal measurement deploying a selected ion flow tube mass spectrometer (SIFT-MS) [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
Formaldehyde (FM) and glyoxal (GL) are important atmospheric species of indoor and outdoor environments. They are either directly emitted in the atmosphere, or they are formed through the oxidation of organic compounds by indoor and/or outdoor ...
A. G. Zogka, M. N. Romanias, F. Thevenet
doaj   +1 more source

Measurement of Odorants in Livestock Buildings: SIFT-MS and TD-GC-MS

open access: yesChemical Engineering Transactions, 2012
Air samples from animal farming are analysed in parallel using traditional TD-GC-MS (thermal desorption gas chromatography mass spectrometry) and SIFT-MS (selected ion flow tube mass spectrometry).
K. Van Huffel   +3 more
doaj   +1 more source

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