Results 61 to 70 of about 488,156 (285)

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Optimization of extraction and identification of volatile compounds from Myrciaria floribunda

Revista Ciência Agronômica, 2021
The composition of the volatile profile of rumberry fruits (Myrciaria floribunda) was determined using solid- phase microextraction in headspace mode and gas chromatography, coupled with mass spectrometry.
Yesenia Mendoza García, Eurico Eduardo Pinto de Lemos, Rodinei Augusti, Júlio Onésio Ferreira Melo   +3 more
doaj   +1 more source

Chromatography of beer [PDF]

, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic techniques used for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

Using deuterated PAH amendments to validate chemical extraction methods to predict PAH bioavailability in soils [PDF]

, 2011
Validating chemical methods to predict bioavailable fractions of polycyclic aromatic hydrocarbons (PAHs) by comparison with accumulation bioassays is problematic.
Collins, Christopher David, Gomez-Eyles, J L, Hodson, Mark Edward   +2 more
core   +1 more source

Dereplicative Combination of HPLC/DAD/MS and 2D NMR to Identify Lichexanthone Isomers in Lichen Extracts

Phytochemical Analysis, EarlyView.
ABSTRACT Introduction Lichexanthones are the major xanthones found in lichens. They present a high degree of isomerism, which makes their identification tedious. Xanthones are known to occur in lichens according to chemosyndromes, and these compounds act as chemotaxonomic markers.
Solenn Ferron, Marylène Chollet‐Krugler, Hermann Pinson, Rania Marzoug, Philippe Uriac, Françoise Lohézic‐Le Dévéhat   +5 more
wiley   +1 more source

Applications of Microextraction Technology for the Analysis of Alcoholic Beverages Quality: Current Perspectives and Future Directions

Foods
Alcoholic beverages are loved by the majority of consumers because of their diverse characteristics and rich nutritional value; thus, ensuring their quality is necessary for maintaining the rapid development of the alcoholic beverage industry.
Yue Qiu, Qi Deng, Yongqing Zhang, Baoguo Sun, Wenxian Li, Wei Dong, Xiaotao Sun   +6 more
doaj   +1 more source

2-pentanone production from hexanoic acid by Penicillium roqueforti from blue cheese:is this the pathway used in humans? [PDF]

, 2014
Production of 2-pentanone, a methylketone, is increased in fasting ketotic humans. Its origin is unknown. We hypothesised that it is formed via β-oxidation of hexanoic acid by the peroxisomal pathway proposed for methylketone-producing fungi and yeasts ...
Mills, Graham A., Walker, Valerie
core   +2 more sources

Solid-Phase Microextraction Arrow for the Sampling of Volatile Organic Compounds in Milk Samples

Separations, 2020
A novel sample preparation method based on the use of the Arrow solid-phase microextraction device was used to extract and preconcentrate volatile organic compounds (VOCs) from milk samples prior to their determination by gas chromatography–mass ...
N. Manousi, E. Rosenberg, G. Zachariadis
semanticscholar   +1 more source

Progress in Surface‐Enhanced Raman Scattering‐Based Volatile Organic Compounds Detection: Materials, Application, and Prospects

Rare Metals, EarlyView.
ABSTRACT The detection of volatile organic compounds (VOCs) holds significant implications in environmental monitoring and disease diagnosis. Traditional gas detection technologies are constrained by complex operation and high cost, thereby failing to satisfy real‐time detection demands.
Yuening Wang, Lin Qiu, Jian Yu, Wen Ma, Xiaoyu Song, Mingjian Zhang, Yujiao Xie, Aochi Liu, Li Sun, Xiangyu Meng, Jie Lin, Xiaotian Wang   +11 more
wiley   +1 more source

Recent Advances in Applications of Ionic Liquids in Miniaturized Microextraction Techniques

Molecules, 2018
Green sample preparation is one of the most challenging aspects in green analytical chemistry. In this framework, miniaturized microextraction techniques have been developed and are widely performed due to their numerous positive features such as ...
Maria Kissoudi, Victoria Samanidou
doaj   +1 more source