Results 51 to 60 of about 24,605 (215)
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 +2 more
wiley +1 more source
Liquid-phase microextraction methods [PDF]
, 2009 Tématem této práce jsou metody kapalinové mikroextrakce. Zabývá se jednotlivými mikroextrakčními technikami a jejich praktickým využitím při analýze organických látek z různých vzorků, především potravin.
Štědrová, Markéta
core
Application of Dispersive Liquid-Liquid Microextraction in Forensic Toxicological Analysis [PDF]
Fayixue Zazhi, 2019 Currently, the main sample pretreatment methods for forensic toxic analysis are liquid-liquid extraction （LLE） and solid-phase extraction （SPE）. As a simple, convenient, and low-cost LLE method, dispersion liquid-liquid microextraction （DLLME） has high ...
YANG Yu, ZHANG Yun-feng, LI Xin-tong，et al.
doaj +1 more source
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 +4 more
wiley +1 more source
Experiences with Carrier-Mediated Transport in Liquid-Phase Microextraction [PDF]
Journal of Chromatographic Science, 2006 Different organic borates, phosphates, sulphates, and carboxylic acids are evaluated as extraction carriers in three-phase liquid-phase microextraction (LPME). Hydrophilic basic drugs form ion-pairs with the carriers and are extracted as ion-pair complexes into an organic liquid membrane of n-octanol or peppermint oil immobilized in the pores of a ...
Tung, Si Ho +2 more
openaire +2 more sources
Analysis of triazine herbicides using an up-and-down-shaker-assisted dispersive liquid-liquid microextraction coupled with gas chromatography-mass spectrometry [PDF]
, 2017 In dispersive liquid-liquid microextraction, a few hundred microliters to a few milliliters of water-miscible dispersive solvent are commonly used to assist emulsification in aqueous samples.
Chen, Pai-Shan;Haung, Wan-Yun;Huang, Shang-Da +1 more
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Mass Spectrometry Reviews, EarlyView.ABSTRACT Top‐down proteomics (TDP) characterizes proteoforms in cells, tissues, and biofluids, in discovery mode and on a global scale, requiring analytical tools with high peak capacity for proteoform separation and high sensitivity for proteoform detection, given the extremely high proteoform complexity and wide proteoform concentration dynamic range.
Guijie Zhu +5 more
wiley +1 more source
Effervescence-Assisted Microextraction—One Decade of Developments
Molecules, 2020 Dispersive microextraction techniques are key in the analytical sample treatment context as they combine a favored thermodynamics and kinetics isolation of the target analytes from the sample matrix.
Guillermo Lasarte-Aragonés +2 more
doaj +1 more source
Recent Advances in Sample Preparation for Cosmetics and Personal Care Products Analysis
Molecules, 2021 The use of cosmetics and personal care products is increasing worldwide. Their high matrix complexity, together with the wide range of products currently marketed under different forms imply a challenge for their analysis, most of them requiring a sample
Maria Celeiro +3 more
doaj +1 more source
Ecological Entomology, EarlyView.Hamiltonella defensa infection increases honeydew production in certain aphid genotypes, potentially modifying aphid feeding behaviour. Parasitoid wasps, Aphidius ervi, are more attracted to honeydew from H. defensa‐infected aphids; though larger honeydew amounts may slightly deter searching.
Desiré Macheda +5 more
wiley +1 more source