Results 61 to 70 of about 1,649,552 (239)

Pyrolysis-GC×GC-TOFMS to characterize carbonaceous chondrites [PDF]

open access: yes, 2005
Using pyrolysis-GCxGC-TOFMS to analyze organic carbon in carbonaceous chondrites gives a massive increase in both sensitivity and structural information from samples when compared to traditional Py-GC ...
Gilmour, I.   +6 more
core  

Determination of Glyphosate Levels in Breast Milk Samples from Germany by LC-MS/MS and GC-MS/MS.

open access: yesJournal of Agricultural and Food Chemistry, 2016
This study describes the validation and application of two independent analytical methods for the determination of glyphosate in breast milk. They are based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass ...
A. Steinborn   +8 more
semanticscholar   +1 more source

Comparison of LC-MS-MS and GC-MS Analysis of Benzodiazepine Compounds Included in the Drug Demand Reduction Urinalysis Program.

open access: yesJournal of Analytical Toxicology, 2016
Liquid chromatography-tandem mass spectrometry (LC-MS-MS) offers specific advantages over gas chromatography-mass spectrometry (GC-MS) such as the ability to identify and measure a broader range of compounds with minimal sample preparation.
E. Perez   +5 more
semanticscholar   +1 more source

COMPARISON OF VOLATILE COMPOSITION OF SUPERCRITICAL CARBON DIOXIDE EXTRACT FROM RHIZOMES OF KOREAN MEDICINAL PLANT 'CHUN-KUNG' (CNIDIUM OFFICINALE MAKINO) BY DIRECT-AND SPME-GC/MS [PDF]

open access: yes, 2014
Objective: The main purpose of this study was to evaluate the volatile composition of supercritical fluid extract (SFE) obtained from Cnidium officinale Makino rhizomes.
Jhoo, Jin-woo   +4 more
core  

Determination of flurbiprofen in pharmaceutical preparations by GC–MS

open access: yesArabian Journal of Chemistry, 2019
This article describes a gas chromatography–mass spectrometry (GC–MS) method for the determination of flurbiprofen in pharmaceutical preparations.
Bilal Yilmaz, Emrah Alkan
doaj  

The detection of drugs of abuse in biological matrices using enzyme-linked immunosorbent assay and liquid chromatography-tandem mass spectrometry [PDF]

open access: yes, 2007
The aim of this study was to investigate the potential use of ELISA and LC-MS-MS in combination and as individual techniques, for the detection of drugs of abuse in biological matrices.
Miller, Eleanor Isabel
core   +1 more source

LC-MS–MS and GC-MS analyses of biologically active extracts and fractions from Tunisian Juniperus phoenice leaves

open access: yesPharmaceutical Biology, 2016
Context: Despite some studies related to Juniperus phoenicea L. (Cupressaceae), phytochemical and biological investigations of this plant remain unexplored.
H. Keskes   +6 more
semanticscholar   +1 more source

Metabolomics : a tool for studying plant biology [PDF]

open access: yes, 2005
In recent years new technologies have allowed gene expression, protein and metabolite profiles in different tissues and developmental stages to be monitored.
Gullberg, Jonas
core  

Characterization of resin extracted from guayule (Parthenium argentatum): A dataset including GC–MS and FT-ICR MS

open access: yesData in Brief, 2020
Guayule (Parthenium argentatum), a shrub native to the arid region of the U.S. southwest and Mexico belonging to the Asteraceae family, is a source of high quality, hypoallergenic natural rubber with applications in pharmaceutical, tire, and food ...
Mostafa Dehghanizadeh   +4 more
doaj  

Ageing of resin from Pinus species assessed by infrared spectroscopy [PDF]

open access: yes, 2016
Resins obtained from Pinus genus species have been widely used in very different fields throughout history. As soon as the resins are secreted, molecular changes start altering their chemical, mechanical and optical properties.
Beltran Sanchidrian, Victòria   +3 more
core   +2 more sources

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