Results 41 to 50 of about 607,507 (319)

Generic sample preparation combined with high-resolution liquid chromatography- time-of-flight mass spectrometry for unification of urine screening in doping-control laboratories [PDF]

open access: yes, 2010
A unification of doping-control screening procedures of prohibited small molecule substances—including stimulants, narcotics, steroids, ß2-agonists and diuretics—is highly urgent in order to free resources for new classes such as banned proteins ...
Georgakopoulos, C.G.   +4 more
core   +3 more sources

State-of-the-Art Analytical Approaches for Illicit Drug Profiling in Forensic Investigations

open access: yesMolecules, 2022
In forensic chemistry, when investigating seized illicit drugs, the profiling or chemical fingerprinting of drugs is considered fundamental. This involves the identification, quantitation and categorization of drug samples into groups, providing ...
Reem Ahmed   +2 more
doaj   +1 more source

Measurement of Ultra-Low Potassium Contaminations with Accelerator Mass Spectrometry [PDF]

open access: yesNucl.Instrum.Meth.A582:381-389,2007, 2007
Levels of trace radiopurity in active detector materials is a subject of major concern in low-background experiments. Among the radio-isotopes, $\k40$ is one of the most abundant and yet whose signatures are difficult to reject. Procedures were devised to measure trace potassium concentrations in the inorganic salt CsI as well as in organic liquid ...
arxiv   +1 more source

Liquid chromatography-tandem mass spectrometry - Application in the clinical laboratory [PDF]

open access: yes, 2003
This review provides a concise survey of liquid chromatography tandem mass spectrometry (LCTMS) as an emerging technology in clinical chemistry. The combination of two mass spectrometers with an interposed collision cell characterizes LCTMS as an ...
Ford RE   +7 more
core   +1 more source

Applications of Liquid Chromatography in Analysis of Pharmaceuticals and Natural Products [PDF]

open access: yes, 2022
It is our pleasure to present this Special Issue of Pharmaceuticals, entitled “Applications of Liquid Chromatography in Analysis of Pharmaceuticals and Natural Products”. Plants produce a wide range of phytochemicals, which are secondary metabolites that

core   +1 more source

Liquid chromatography–mass spectrometry analysis of carvacrol in chicken tissues

open access: yesJournal of Veterinary Research, 2022
Carvacrol is an essential oil derived from oregano that is used as a natural additive to improve the efficiency of livestock nutrition. Residues of natural additives such as carvacrol should be monitored in food of animal origin to ensure consumer safety.
Śniegocki Tomasz
doaj   +1 more source

Anthocyanin Profiling Using UV-Vis Spectroscopy and Liquid Chromatography Mass Spectrometry.

open access: yesJournal of AOAC International, 2019
Background: As a powerful antioxidant and natural colorant, anthocyanins are being used increasingly as a component of food supplements and nutraceutical products. Hence, its characterization is a prerequisite for further exploration of its nutraceutical
S. Saha   +5 more
semanticscholar   +1 more source

Progress in the analysis and detection of steroidal hormones in royal jelly

open access: yesShipin yu jixie, 2022
The rapid determination of steroidal hormones and their contents in royal jelly by molecular imprinting and high performance liquid chromatography-mass spectrometry (HPLC-MS) was reviewed.
LI Zheng   +4 more
doaj   +1 more source

Arsenosugar phospholipids and arsenic hydrocarbons in two species of brown macroalgae [PDF]

open access: yes, 2012
Fourteen arsenolipids, including 11 new compounds, were identified and quantified in two species of brown algae, Wakame (Undaria pinnatifida) and Hijiki (Hizikia fusiformis), by high resolution mass spectrometry, high performance liquid chromatography ...
Francesconi, Kevin A.   +4 more
core   +2 more sources

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