Results 31 to 40 of about 9,530 (292)

The constrained median : a way to incorporate side information in the assessment of food samples [PDF]

, 2020
A classical problem in the field of food science concerns the consensus evaluation of food samples. Typically, several panelists are asked to provide scores describing the perceived quality of the samples, and subsequently, the overall (consensus) scores
De Baets, Bernard, Devlieghere, Frank, Kuuliala, Lotta, Perez Fernandez, Raul, Sader, Marc   +4 more
core   +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

Foods, 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, Jinyi Liu, Sheryl Ann Barringer, Xuesong Huang   +3 more
doaj   +1 more source

Status of selected ion flow tube MS: accomplishments and challenges in breath analysis and other areas [PDF]

, 2016
This article reflects our observations of recent accomplishments made using selected ion flow tube MS (SIFT-MS). Only brief descriptions are given of SIFT-MS as an analytical method and of the recent extensions to the underpinning analytical ion ...
Smith, D, Španěl, P
core   +1 more source

Kinetic Measurements of Cl Atom Reactions with C₅–C₈ Unsaturated Alcohols

Atmosphere, 2020
The reactions of five structurally similar unsaturated alcohols, i.e., (Z)-2-penten-1-ol, (E)-2-hexen-1-ol, (E)-3-hexen-1-ol, (Z)-3-hexen-1-ol, and 1-octen-3-ol, with Cl atoms in the gas phase, were investigated at 296 ± 2 K and 1 atm by the ...
Asma Grira, Cornelia Amarandei, Manolis N. Romanias, Gisèle El Dib, André Canosa, Cecilia Arsene, Iustinian Gabriel Bejan, Romeo Iulian Olariu, Patrice Coddeville, Alexandre Tomas   +9 more
doaj   +1 more source

SIFT-MS and FA-MS methods for ambient gas phase analysis: developments and applications in the UK [PDF]

, 2014
Selected ion flow tube mass spectrometry, SIFT-MS, a relatively new gas/vapour phase analytical method, is derived from the much earlier selected ion flow tube, SIFT, used for the study of gas phase ion-molecule reactions.
Smith, D, Spanel, P
core   +1 more source

Sub-parts per billion detection of trace volatile chemicals in human breath using Selected Ion Flow Tube Mass Spectrometry

BMC Research Notes, 2008
Background Selected ion flow tube mass spectrometry (SIFT-MS) allows the real time quantification of trace gases in air. Due to its tolerance of high humidity levels the technique is particularly suited to the chemical analysis of breath.
Ross Brian M
doaj   +1 more source

FA-SIFT study of the reactions of H₃O⁺∙(H₂O)n (n=0, 1, 2), NO⁺ and O₂˙⁺ with the terpenoid aldehydes citral, citronellal and myrtenal and their alcohol analogues [PDF]

, 2015
A
Amelynck, Crist, Bultinck, Patrick, Mees, Bernd, Schoon, N   +3 more
core   +2 more sources

Hyphenated Mass Spectrometry versus Real-Time Mass Spectrometry Techniques for the Detection of Volatile Compounds from the Human Body

Molecules, 2021
Mass spectrometry (MS) is an analytical technique that can be used for various applications in a number of scientific areas including environmental, security, forensic science, space exploration, agri-food, and numerous others.
Oliver Gould, Natalia Drabińska, Norman Ratcliffe, Ben de Lacy Costello   +3 more
doaj   +1 more source

A comparison of GC-FID and PTR-MS toluene measurements in ambient air under conditions of enhanced monoterpene loading [PDF]

, 2010
Toluene was measured using both a gas chromatographic system (GC), with a flame ionization detector (FID), and a proton transfer reaction-mass spectrometer (PTR-MS) at the AIRMAP atmospheric monitoring station Thompson Farm (THF) in rural Durham, NH ...
Ambrose, Jesse L., Frinak, E. K., Haase, K., Jordan, C., Mayne, Howard R., Russo, R. S., Sive, B. C., Talbot, Robert W., White, M. L., Zhou, Y.   +9 more
core   +4 more sources

Negative Reagent Ions for Real Time Detection Using SIFT-MS [PDF]

Environments, 2017
Direct analysis techniques have greatly simplified analytical methods used to monitor analytes at trace levels in air samples. One of these methods, Selected Ion Flow Tube-Mass Spectrometry (SIFT-MS), has proven to be particularly effective because of its speed and ease of use.
David Hera, Vaughan Langford, Murray McEwan, Thomas McKellar, Daniel Milligan   +4 more
openaire   +1 more source