Results 11 to 20 of about 50,630 (254)
Applied Sciences, 2023 Analysis of salivary volatile organic compounds (VOCs) may offer a novel noninvasive modality for disease detection. This study aims to optimise saliva headspace VOC analysis and assess longitudinal variation of salivary VOCs.
Bhamini Vadhwana +5 more
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IVES Technical Reviews, 2023 Over the last decade, there have been renewed efforts into wine grape breeding within the research community. Quick characterisation by phenotyping of quality traits, including aroma composition, remains challenging.
Thomas Baerenzung dit Baron +5 more
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SIFT-MS: Quantifying the Volatiles You Smell…and the Toxics You Don’t
Chemosensors, 2023 The human olfactory system is highly attuned to detection of a wide range of volatile organic compounds (VOCs), but the sensitivity varies considerably based on chemical functionality.
Vaughan S. Langford
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Addition of fast gas chromatography to selected ion flow tube mass spectrometry for analysis of individual monoterpenes in mixtures [PDF]
Atmospheric Measurement Techniques, 2019 Soft chemical ionization mass spectrometry (SCI-MS) techniques can be used to accurately quantify volatile organic compounds (VOCs) in air in real time; however, differentiation of isomers still represents a challenge.
M. Lacko +5 more
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Evaluation of Solvent Compatibilities for Headspace-SIFT-MS Analysis of Pharmaceutical Products
Analytica, 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
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Pharmaceutical Residual Solvent Analysis: A Comparison of GC-FID and SIFT-MS Performance
AppliedChem, 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
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Formaldehyde and glyoxal measurement deploying a selected ion flow tube mass spectrometer (SIFT-MS) [PDF]
Atmospheric 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
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Measurement of Odorants in Livestock Buildings: SIFT-MS and TD-GC-MS
Chemical 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
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Sniffing Out Urinary Tract Infection—Diagnosis Based on Volatile Organic Compounds and Smell Profile
Biosensors, 2020 Current available methods for the clinical diagnosis of urinary tract infection (UTI) rely on a urine dipstick test or culturing of pathogens. The dipstick test is rapid (available in 1–2 min), but has a low positive predictive value, while culturing is ...
Valentin-Mihai Dospinescu +2 more
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Repeatability of the measurement of exhaled volatile metabolites using selected ion flow tube mass spectrometry [PDF]
Journal 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 +2 more sources