Search Results - "Španěl, Patrik"

Progress in SIFT-MS: Breath analysis and other applications by Španěl, Patrik, Smith, David

“…The development of selected ion flow tube mass spectrometry, SIFT-MS, is described from its inception as the modified very large SIFT instruments used to…”
Get full text

Selected Ion Flow-Drift Tube Mass Spectrometry: Quantification of Volatile Compounds in Air and Breath by Spesyvyi, Anatolii, Smith, David, Španěl, Patrik

“…A selected ion flow-drift tube mass spectrometric analytical technique, SIFDT-MS, is described that extends the established selected ion flow tube mass…”
Get full text

Ambient analysis of trace compounds in gaseous media by SIFT-MS by Smith, David, Spaněl, Patrik

“…The topic of ambient gas analysis has been rapidly developed in the last few years with the evolution of the exciting new techniques such as DESI, DART and…”
Get more information

Selected ion flow tube mass spectrometry (SIFT-MS) for on-line trace gas analysis by Smith, David, Španěl, Patrik

“…Selected ion flow tube mass spectrometry (SIFT‐MS) is a new analytical technique for the real‐time quantification of several trace gases simultaneously in air…”
Get full text

Electrostatic Switching and Selection of H3O+, NO+, and O2 +• Reagent Ions for Selected Ion Flow-Drift Tube Mass Spectrometric Analyses of Air and Breath by Španěl, Patrik, Spesyvyi, Anatolii, Smith, David

“…Soft chemical ionization mass spectrometry techniques, particularly the well-established proton transfer reaction mass spectrometry, PTR-MS, and selected ion…”
Get full text

A longitudinal study of ammonia, acetone and propanol in the exhaled breath of 30 subjects using selected ion flow tube mass spectrometry, SIFT-MS by Turner, Claire, Spanel, Patrik, Smith, David

“…Selected ion flow tube mass spectrometry, SIFT-MS, has been used to monitor the volatile compounds in the exhaled breath of 30 volunteers (19 males, 11…”
Get more information

The challenge of breath analysis for clinical diagnosis and therapeutic monitoring by Smith, David, Spanel, Patrik

“…The potential of breath analysis for clinical diagnosis and the strengths and weaknesses of the analytical methods used are discussed. Special attention is…”
Get more information

A longitudinal study of ethanol and acetaldehyde in the exhaled breath of healthy volunteers using selected-ion flow-tube mass spectrometry by Turner, Claire, Španěl, Patrik, Smith, David

“…Selected‐ion flow‐tube mass spectrometry (SIFT‐MS) has been used to monitor the volatile compounds in the exhaled breath of 30 volunteers (19 male, 11 female)…”
Get full text

A selected ion flow tube mass spectrometry study of ammonia in mouth- and nose-exhaled breath and in the oral cavity by Smith, David, Wang, Tianshu, Pysanenko, Andriy, Španěl, Patrik

“…A study has been carried out, involving three healthy volunteers, of the ammonia levels in breath exhaled via the mouth and via the nose and in the static oral…”
Get full text

Increase of the Charge Transfer Rate Coefficients for NO+ and O2 +• Reactions with Isoprene Molecules at Elevated Interaction Energies by Spesyvyi, Anatolii, Sovová, Kristýna, Smith, David, Španěl, Patrik

“…Atmospheric concentrations of isoprene (2-methylbutadiene) in environmental research and in exhaled breath for medical research are usually measured by soft…”
Get full text

A longitudinal study of methanol in the exhaled breath of 30 healthy volunteers using selected ion flow tube mass spectrometry, SIFT-MS by Turner, Claire, Spanel, Patrik, Smith, David

“…Selected ion flow tube mass spectrometry, SIFT-MS, has been used to monitor the volatile compounds in the exhaled breath of 30 volunteers (19 male, 11 female)…”
Get more information

A longitudinal study of breath isoprene in healthy volunteers using selected ion flow tube mass spectrometry (SIFT-MS) by Turner, Claire, Spanel, Patrik, Smith, David

“…Thirty volunteers (19 males, 11 females) were recruited for a 6-month study of the volatile compounds in their exhaled breath using the selected ion flow tube…”
Get more information

Breath analysis of ammonia, volatile organic compounds and deuterated water vapor in chronic kidney disease and during dialysis by Davies, Simon J, Španěl, Patrik, Smith, David

“…The volatile metabolites present in trace amounts in exhaled breath of healthy individuals and patients, for example those with advanced chronic kidney disease…”
Get full text

Acetone, butanone, pentanone, hexanone and heptanone in the headspace of aqueous solution and urine studied by selected ion flow tube mass spectrometry by Pysanenko, Andriy, Wang, Tianshu, Španěl, Patrik, Smith, David

“…Urine is commonly analysed in clinical practice by a variety of liquid‐phase techniques to check for excessive ketone bodies, proteins and salts to name just a…”
Get full text

Effects of dietary nutrients on volatile breath metabolites by Ajibola, Olawunmi A., Smith, David, Španěl, Patrik, Ferns, Gordon A. A.

“…Breath analysis is becoming increasingly established as a means of assessing metabolic, biochemical and physiological function in health and disease. The…”
Get full text

Mass Spectrometric Quantification of Volatile Compounds Released by Fresh Atlantic Salmon Stored at 4 °C under Modified Atmosphere Packaging and Vacuum Packaging for up to 16 Days by Dalsvåg, Hanne, Cropotova, Janna, Jambrak, Anet Režek, Janči, Tibor, Španěl, Patrik, Dryahina, Kseniya, Smith, David, Rustad, Turid

“…Atlantic salmon is rich in bioactive proteins, antioxidants, vitamins, and omega-3 fatty acids, making it a rich source of essential nutrients. However, it is…”
Get full text

Selected ion flow tube mass spectrometry of exhaled breath condensate headspace by Čáp, Petr, Dryahina, Kseniya, Pehal, František, Španěl, Patrik

“…Collection of exhaled breath condensate (EBC) is a relatively simple noninvasive method of breath analysis; however, no data have been reported that would…”
Get full text

Understanding Gas Phase Ion Chemistry Is the Key to Reliable Selected Ion Flow Tube-Mass Spectrometry Analyses by Smith, David, McEwan, Murray J, Španěl, Patrik

“…Ion–molecule reactions (IMR) are at the very core of trace gas analyses in modern chemical ionization (CI) mass spectrometer instruments, which are…”
Get full text

Gas‐phase ion mobility of protonated aldehydes in helium measured using a selected ion flow‐drift tube by Gnioua, Maroua Omezzine, Španěl, Patrik, Spesyvyi, Anatolii

“…Rationale In soft chemical ionization mass spectrometry, analyte ions are produced via ion–molecule reactions in the reactor. When an electric field E is…”
Get full text

Selected Ion Flow Tube Study of Ion–Molecule Reactions of N+(3P) and Kr+ with C3 Hydrocarbons Propane, Propene, and Propyne by Dryahina, Kseniya, Cunha de Miranda, Barbara K, Španěl, Patrik, Žabka, Jan, Alcaraz, Christian, Herman, Zdenek

“…Reactions of 14N+(3P), 15N+(3P), and Kr+ with propane, propene, and propyne were studied using the selected ion flow tube, SIFT, technique. Thermal rate…”
Get full text