Results 61 to 70 of about 24,155 (261)

Field-Dependent Reduced Ion Mobilities of Positive and Negative Ions in Air and Nitrogen in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) [PDF]

Journal of the American Society for Mass Spectrometry, 2020
In High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS), ions are formed in a reaction region and separated in a drift region, which is similar to classical drift tube ion mobility spectrometers (IMS) operated at ambient pressure. However, in contrast to the latter, the HiKE-IMS is operated at a decreased background pressure of 10–40 mbar and ...
Maria Allers, Ansgar T. Kirk, Christoph Schaefer, Duygu Erdogdu, Walter Wissdorf, Thorsten Benter, Stefan Zimmermann   +6 more
openaire   +2 more sources

Discrimination and Characterization of the Volatile Organic Compounds in Schizonepetae Spica from Six Regions of China Using HS-GC-IMS and HS-SPME-GC-MS

Molecules, 2022
Volatile organic compounds (VOCs) are the main chemical components of Schizonepetae Spica (SS), which have positive effects on the quality evaluation of SS.
Chao Li, Huiying Wan, Xinlong Wu, Jiaxin Yin, Limin Zhu, Hanjiang Chen, Xinbo Song, Lifeng Han, Wenzhi Yang, Heshui Yu, Zheng Li   +10 more
doaj   +1 more source

A Novel Method Based on Headspace-Ion Mobility Spectrometry for the Detection and Discrimination of Different Petroleum Derived Products in Seawater

Sensors, 2021
The objective of the present study is to develop an optimized method where headspace-ion mobility spectrometry is applied for the detection and discrimination between four petroleum-derived products (PDPs) in water.
Lucas Jaén-González, Ma José Aliaño-González, Marta Ferreiro-González, Gerardo F. Barbero, Miguel Palma   +4 more
doaj   +1 more source

Computational methods for metabolomic data analysis of ion mobility spectrometry data-reviewing the state of the art [PDF]

, 2012
Ion mobility spectrometry combined with multi-capillary columns (MCC/IMS) is a well known technology for detecting volatile organic compounds (VOCs). We may utilize MCC/IMS for scanning human exhaled air, bacterial colonies or cell lines, for example ...
Baumbach, Jan, Baumbach, Jörg Ingo, Hauschild, Anne-Christin, Jang, Mi, Pauling, Josch, Rupp, Kathrin, Schneider, Till   +6 more
core   +3 more sources

Development and Application of an Ion Gate Driving Power Supply for Inverse Ion Mobility Spectrometry

Zhipu Xuebao
Ion mobility spectrometry (IMS) is a trace detection technique. It realizes rapid separation and detection of ions by capitalizing on the disparities in the mobility velocities of ions in an electric field under atmospheric pressure.
Wan-jun LI, Yuan-jiang LUO, Ling-wen KONG, Jia-huan HAO, Yang LI, Lei XIA, Ya-wei LIU, Cheng-yin SHEN, Chao-qun HUANG, Yan-nan CHU   +9 more
doaj   +1 more source

Research Progress in the Application of Gas Chromatography-Ion Mobility Spectrometry in Food Authentication [PDF]

Shipin Kexue
Gas chromatography-ion mobility spectrometry (GC-IMS) is a sensitive analytical technology for the detection, identification and monitoring of trace substances in different matrices, which enables secondary rapid separation and high-precision qualitative
ZHANG Biying, SUI Yumeng, ZHANG Xin, LI Yongjie, KONG Baohua, LIU Haotian, CHEN Qian
doaj   +1 more source

Lipid changes within the epidermis of living skin equivalents observed across a time-course by MALDI-MS imaging and profiling [PDF]

, 2015
© 2015 Mitchell et al. Abstract Background: Mass spectrometry imaging (MSI) is a powerful tool for the study of intact tissue sections. Here, its application to the study of the distribution of lipids in sections of reconstructed living skin equivalents ...
Clench, Malcolm, Donaldson, M., Francese, S., Long, H., Mitchell, C.A.   +4 more
core   +2 more sources

Pulsed electron beams in ion mobility spectrometry [PDF]

, 2012
Ion mobility spectrometry is a well-known technique used to analyze trace gases in ambient air. Typically, it works by employing a radioactive source to provide electrons with high energy to ionize the analytes in a series of chemical reactions.
Baether, Wolfgang, Gunzer, Frank, Zimmermann, Stefan   +2 more
core   +2 more sources

Characterization of the Flavor Profile of Bigeye Tuna Slices Treated by Cold Plasma Using E-Nose and GC-IMS

Fishes, 2022
To avoid heat, treatment induces numerous physicochemical changes under severe conditions in the tuna, cold plasma (CP), as a non-thermal technology, possess objective potential on tuna processing.
Weicong Pan, Soottawat Benjakul, Chiara Sanmartin, Alessandra Guidi, Xiaoguo Ying, Lukai Ma, Xudong Weng, Jin Yu, Shanggui Deng   +8 more
doaj   +1 more source

Noninvasive Disease Diagnostics: The Swiss Contribution Highlights to Breath Analysis Research

Helvetica Chimica Acta, EarlyView.
Breath analysis networks across Switzerland linking health monitoring, clinical applications, population studies, and data‐driven public health decisions. ABSTRACT To celebrate the 125th anniversary of the Swiss Chemical Society, we present a review and perspective to highlight the recent research in breath analysis that has been conducted in ...
Stefan James Swift, Kseniya Dryahina, Patrik Španěl, Flora Kontopidou, Christos Kokkotis, Renato Zenobi, Stamatios Giannoukos   +6 more
wiley   +1 more source