Results 81 to 90 of about 1,345,257 (199)

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

open access: yesMass Spectrometry Reviews, Volume 45, Issue 2, Page 392-428, March/April 2026.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo   +5 more
wiley   +1 more source

Noninvasive detection of lung cancer by analysis of exhaled breath

open access: yesBMC Cancer, 2009
Background Lung cancer is one of the leading causes of death in Europe and the western world. At present, diagnosis of lung cancer very often happens late in the course of the disease since inexpensive, non-invasive and sufficiently sensitive and ...
Denz Hubert   +19 more
doaj   +1 more source

Project Mohole Results Enhanced With Modern XRF Core Scanning and Imaging

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Geologic collections play a fundamental role in advancing scientific discoveries, offering rich global archives reaching deep into Earth's past. Realizing the scientific potential of these remarkable resources will require the generation and curation of usable data to facilitate open science and data synthesis efforts.
Margaret A. Morris   +3 more
wiley   +1 more source

Characterization of the aroma release from retronasal cavity and flavor perception during baijiu consumption by Vocus-PTR-MS, GC×GC-MS, and TCATA analysis

open access: yesLWT, 2023
Lu Chen   +9 more
semanticscholar   +1 more source

Longitudinal metabolomics study of phosphate‐adenine‐guanosine‐glucose‐saline‐mannitol stored red blood cells

open access: yesTransfusion, Volume 66, Issue 3, Page 455-467, March 2026.
Abstract Background The storage of red blood cells (RBCs) is essential for transfusion but leads to storage lesions that compromise RBC quality and increase the risk of transfusion‐related adverse effects, including allergic transfusion reactions (ATRs). Understanding storage‐induced metabolic change is crucial for enhancing transfusion safety.
Gürkan Bal   +5 more
wiley   +1 more source

Response of protonated, adduct, and fragmented ions in Vocus proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) [PDF]

open access: yesAtmospheric Measurement Techniques
Volatile organic compounds (VOCs) affect secondary pollutant formation via active chemistry. Proton-transfer-reaction mass spectrometry (PTR-MS) is one of the most important techniques to study the highly variable spatial and temporal characteristics of ...
F. Li   +15 more
doaj   +1 more source

Diurnal Trends Differentiate Anthropogenic and Biogenic Terpenes in the Los Angeles Basin

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Terpenoids play a significant role in the formation of tropospheric ozone and secondary organic aerosol. While terpenoids are largely attributed to biogenic sources, they are also widely used in consumer products that end up in the atmosphere.
Afsara Tasnia   +14 more
wiley   +1 more source

EVOO or not EVOO? A new precise and simple analytical tool to discriminate extra virgin olive oils

open access: yesAdvances in Horticultural Science, 2017
International Olive Oil Council (IOOC) states chemical and organolep- tic parameters to classify the commercial grade of olive oil. Finding tools or analytical procedures able to support the organoleptic evaluation would be helpful to streamline and ...
C. Taiti, E. Marone
doaj   +1 more source

Fast Direct Injection Mass-Spectrometric Characterization of Stimuli for Insect Electrophysiology by Proton Transfer Reaction-Time of Flight Mass-Spectrometry (PTR-ToF-MS)

open access: yesSensors, 2012
Electrophysiological techniques are used in insect neuroscience to measure the response of olfactory neurons to volatile odour stimuli. Widely used systems to deliver an olfactory stimulus to a test insect include airstream guided flow through glass ...
Franco Biasioli   +2 more
doaj   +1 more source

Performance of SIFT-MS and PTR-MS in the measurement of volatile organic compounds at different humidities

open access: yes, 2019
. As direct real-time analysis techniques, Selective Ion Flow Tube Mass Spectrometry (SIFT-MS) and Proton-Transfer Reaction Mass Spectrometry (PTR-MS) provide on-line measurement of volatile organic compounds (VOCs).
Ann-Sophie Lehnert   +4 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy