Results 91 to 100 of about 20,265 (247)

Applications of Ion Mobility Spectrometry (IMS) to the Analysis of gamma-Hydroxybutyrate and gamma-Hydroxyvalerate in Toxicological Matrices [PDF]

Journal of Analytical Toxicology, 2006
The predator drug gamma-hydroxybutyrate (GHB) and its lactone form gamma-butyrolactone (GBL) continue to present significant analytical challenges to forensic toxicologists and chemists. The five-carbon analogue (gamma hydroxyvalerate GHV) and the corresponding lactone GVL) are emerging as substitutes for GHB, adding further complications. Ion mobility
Jennifer, Mercer, Diaa, Shakleya, Suzanne, Bell   +2 more
openaire   +2 more sources

Characterization of Cantaloupe, Grape, Pumpkin, and Tomato Seed Oils From Xinjiang: Oxidative Stability, Volatile‐Compound Analysis, and Sensory Evaluation

Food Chemistry International, EarlyView.
This study compares oxidative stability, fatty acid profiles, volatile compounds, and sensory attributes of four Xinjiang seed oils. Distinct aldehyde‐driven aroma patterns and compositional differences were revealed, providing a scientific basis for quality evaluation and valorization of underutilized plant seed oils in food applications.
Yilai Wan, Zhanglian Chen, Hongbin Wu, Wenyu Liu, Changqing Wei   +4 more
wiley   +1 more source

High-Resolution Ion Mobility Spectrometry for Rapid Cannabis Potency Testing. [PDF]

, 2018
We report initial results from an ion mobility spectrometry (IMS)-based analysis of natural cannabis samples and explore the possibility of using this technique to distinguish medical marijuana from illegal forms of the drug, as defined by Swiss ...
Kamrath, Michael Z, Weinmann, Wolfgang, Hädener, Marianne, Groessl, Michael   +3 more
core   +1 more source

Formation of positive product ions from substances with low proton affinity in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS).

Rapid Communications in Mass Spectrometry, 2020
RATIONALE Ion mobility spectrometer are typically equipped with atmospheric pressure chemical ionization (APCI) sources operated at ambient pressure. However, classical APCI ion mobility spectrometers suffer from a limited ionization yield for nonpolar ...
Maria Allers, A. Kirk, C. Schaefer, F. Schlottmann, S. Zimmermann   +4 more
semanticscholar   +1 more source

Metabolic profiling of human blood by high-resolution ion mobility mass spectrometry (IM-MS) [PDF]

International Journal of Mass Spectrometry, 2010
A high resolution ion mobility time-of-flight mass spectrometer with electrospray ionization source (ESI-IM-MS) was evaluated as an analytical method for rapid analysis of complex biological samples such as human blood metabolome was investigated.
Prabha, Dwivedi, Albert J, Schultz, Herbert H, Hill   +2 more
openaire   +2 more sources

Research on the application of liquid-liquid extraction-gas chromatography-mass spectrometry (LLE-GC-MS) and headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) in distinguishing the Baiyunbian aged liquors

, 2020
The purpose of the study was to reveal the differences of the flavor compounds among five Baiyunbian aged liquors by liquid-liquid extraction-gas chromatography-mass spectrometry (LLE-GC-MS) and headspace-gas chromatography-ion mobility spectrometry (HS ...
Rong-Qi Zhou, Xiao Chen, Ying Xia, M. Chen, Yu Zhang, Qin Li, D. Zhen, S. Fang   +7 more
semanticscholar   +1 more source

Smart detection of juice adulteration: An approach based on ion mobility spectrometry and machine learning

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Fruit juice quality is regulated by European Union legislation; however, adulteration by adding cheaper alternatives, such as white grape juice, remains a prevalent issue. This practice constitutes economic fraud and poses health risks to consumers, including potential allergic reactions to the adulterant.
José Luis P Calle, Marta Ferreiro‐González, Miguel Palma   +2 more
wiley   +1 more source

Analytical Approaches to Address Challenges in the Analysis of Cannabinoids in Vascular Matrices Using Mass Spectrometry

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Phytocannabinoids are bioactive metabolites derived from the Cannabis sativa plant. They have garnered attention due to their recreational uses and therapeutic potential. Although various analytical strategies have been employed for their analysis, mass spectrometry (MS) coupled to chromatographic separation is superior due to its sensitivity ...
Radwa Mahmoud, Robert B. Laprairie, Anas El‐Aneed   +2 more
wiley   +1 more source

SANDIA REPORT Ion Mobility Spectrometer / Mass Spectrometer (IMS-MS) Ion Mobility Spectrometer / Mass Spectrometer (IMS-MS) [PDF]

, 2020
The use of Ion Mobility Spectrometry (IMS) in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and ...
Deborah E Hunka, Daniel E Austin
core  

Transversal Modulation Ion Mobility Spectrometry (IMS) Coupled with Mass Spectrometry (MS): Exploring the IMS-IMS-MS Possibilities of the Instrument [PDF]

, 2016
A prototype is introduced based on the transversal modulation ion mobility spectrometry (TMIMS) technique, which provides a continuous output of mobility-selected ions, greatly easing the synchronization between different analyzing stages.
J. Cuevas (1679692), G. Vidal-de-Miguel (1679698), C. Barrios (1679701), M. Macía (1679695)   +3 more
core   +1 more source