Results 91 to 100 of about 403,538 (154)

Determination of parabens in human urine by liquid chromatography coupled with electrospray ionization tandem mass spectrometry [PDF]

open access: yes, 2014
A simple and sensitive method was developed for the simultaneous determination of methyl, ethyl,n-propyl,n-butyl, and benzyl parabens in human urine by liquid chromatography coupled with electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS).
Fu, Jiamo   +6 more
core   +1 more source

Recent developments in the rapid analysis of plants and tracking their bioactive constituents [PDF]

open access: yes, 2009
Natural products chemistry has witnessed many new developments in the last 5 years like extractions with subcritical water and ionic liquids, LC/HRMS and LC/SPE/cryo-NMR, UHPLC, TLC/MS, MS-based preparative HPLC, comprehensive chromatography (GC × GC, LC
Beek, T.A., van   +7 more
core   +2 more sources

Determination of stigmasterol hydroperoxides using high-performance liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization

open access: yesCzech Journal of Food Sciences, 2004
A new specific method using high-performance liquid chromatography-mass spectrometry (HPLC-MS) for the detection of stigmasterol hydroperoxides was developed.
S. Kemmo   +3 more
doaj   +1 more source

Development and application of an UHPLC-MS/MS method for the simultaneous determination of 17 steroidal hormones in equine serum [PDF]

open access: yes, 2017
A new, fast and simple analytical method that is able to identify and quantify simultaneously 17 steroid hormones and metabolites (Pregnenolone, 17-OH-Pregnenolone, Progesterone, 17-OH Progesterone, Androsterone, Androstenedione, DHEA, DHEAS ...
Allis   +20 more
core   +1 more source

High Performance Liquid Chromatography-Tandem Mass Spectrometry for the Determination of Bile Acids in Mouse Serum [PDF]

open access: diamond, 2017
Tingting Gao   +5 more
openalex   +1 more source

Aspectos analíticos e regulatórios na determinação de resíduos de macrolídeos em alimentos de origem animal por cromatografia líquida associada à espectrometria de massas Analytical and regulatory aspects for determination of macrolide residues in animal-derived foods by liquid chromatography associated with mass spectrometry

open access: yesQuímica Nova, 2013
This is an overview of LC-MS techniques applied for macrolide determination in food, including sample preparation and method validation, as well as the policies adopted by international agencies regarding their presence in food.
Marcela Sismotto   +2 more
doaj  

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