Results 121 to 130 of about 488,156 (285)

Sorbent-Based Microextraction Combined with GC-MS: A Valuable Tool in Bioanalysis

Chemosensors
Sample preparation is broadly recognized as the most critical, time-consuming, and error-prone step of a bioanalytical workflow. Over the years, the development of pretreatment methods aimed at the isolation and preconcentration of the target analytes ...
Marianna Ntorkou, Constantinos K. Zacharis   +1 more
doaj   +1 more source

Dispersive liquid-liquid microextraction-gas chromatography-mass spectrometric determination of polycylic aromatic hydrocarbons in water [PDF]

, 2011
In this work, a sample preparation method based on dispersive liquid-liquid microextraction (DLLME) coupled with gas chromatography-mass spectrometry (GC-MS) was developed for the extraction of polycyclic aromatic hydrocarbons (PAHs), namely phenanthrene
Sharef A., Sarra Younes
core  

Recent developments in solid-phase microextraction

Analytical and Bioanalytical Chemistry, 2008
The main objective of this review is to describe the recent developments in solid-phase microextraction technology in food, environmental and bioanalytical chemistry applications. We briefly introduce the historical perspective on the very early work associated with the development of theoretical principles of SPME, but particular emphasis is placed on
Sanja, Risticevic, Vadoud H, Niri, Dajana, Vuckovic, Janusz, Pawliszyn   +3 more
openaire   +2 more sources

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

Mass 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, Huiling Wang, Xiaolan Hu, Sasho Gligorovski, Xue Li, Pablo Sinues   +5 more
wiley   +1 more source

Intact Proteoform Analysis by Capillary Electrophoresis–Mass Spectrometry. Are We There Yet?

Angewandte Chemie, Volume 138, Issue 5, 28 January 2026.
Mass spectrometry (MS) and top–down proteomics (TDP) have emerged as powerful tools to decipher proteoform‐level information, advancing biological insight and translational research. This study unites leaders in capillary electrophoresis (CE) and MS from multiple institutions across the globe to showcase the reproducibility, unique information, and ...
Noah Gould, Qianjie Wang, Jeffrey N. Agar, Jennifer S. Brodbelt, Daoyang Chen, Kellye A. Cupp‐Sutton, Elena Domínguez‐Vega, Fei Fang, Marianne Fillet, Matthew S Fischer, Attila Gaspar, Ying Ge, Marie‐Jia Gou, Michal Greguš, Christoph Gstöttner, Narmin Hamidli, Amanda Helms, Md Amin Hossain, Kyle J. Juetten, Neil L. Kelleher, Tobias Kraus, Eli J. Larson, J. Scott Mellors, Cynthia Nagy, Christian Neusüß, Erin A. Redman, Jasmin Schairer, Si Wu, Tian Xu, Zhitao Zhao, Guijie Zhu, Alexander R. Ivanov, Kevin Jooß, Liangliang Sun   +33 more
wiley   +2 more sources

Determination of volatiles in beer using solid-phase microextraction in combination with gas chromatography/mass spektrometry

Czech Journal of Food Sciences, 2014
Headspace solid phase microextraction and purge and trap analysis were used for the determination of volatiles in beer. These methods were compared with the analysis of unconcentrated gas phase and liquid extraction. Solid phase microextraction proved to
Jana KLEINOVÁ, Bořivoj KLEJDUS
doaj   +1 more source

The Application of Headspace: Solid-Phase Microextraction (HS-SPME) Coupled with Gas Chromatography/Mass Spectrometry (GC/MS) for the Characterization of Polymers [PDF]

, 2017
Solid-Phase Microextraction (SPME) is a very simple and efficient, solventless sample preparation method, invented by Pawliszyn and coworkers at the University of Waterloo (Canada) in 1989.
Kusch, Peter (Dr.)
core  

Direct Ambient Mass Spectrometry for Food, Beverage, and Agricultural Sample Analysis and Research

Mass Spectrometry Reviews, Volume 45, Issue 2, Page 429-452, March/April 2026.
ABSTRACT Ambient and direct mass spectrometry (MS) methods are becoming increasingly used for the rapid analysis of food, beverage and agricultural samples. Novel ionization approaches combined with targeted, or untargeted workflows provide analytical outcomes within a greatly reduced time period compared to traditional separation science coupled with ...
Leigh M. Schmidtke, Liang Jiang, Morphy Dumlao, William A. Donald   +3 more
wiley   +1 more source

Deciphering How Olive Volatiles and Fatty Acids Shape Bactrocera oleae (Rosii) Oviposition Preference Using Multivariate Regression Models

Journal of Applied Entomology, Volume 150, Issue 2, Page 254-264, March 2026.
ABSTRACT The olive fly (Bactrocera oleae (Rossi)), the major pest of olives, primarily recognises visual, olfactory, acoustic, gustatory and tactile signals that regulate its behavioural activity, courtship and reproductive success, as well as the search for ideal conditions for its offspring.
Antonio González‐Fernández, Pilar Rallo, António M. Peres, Nuno Rodrigues, Susana Casal, José Alberto Pereira, Ana Morales‐Sillero   +6 more
wiley   +1 more source

Optimization of sol-gel hybrid mediated hollow fiber-solid phase microextraction for the analysis of selected aldehydes [PDF]

, 2014
Hexanal and heptanal are two promising aldehydes that have been found in biological samples of lung cancer patients. In general, aldehydes can be detected in trace level as low as part per billion or part per trillion levels.
Abd. Wahib, Siti Munirah, Sanagi, Mohd. Marsin, Wan Ibrahim, Wan Aini   +2 more
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