Results 61 to 70 of about 3,673,766 (300)

Two-step separation of nostotrebin 6 from cultivated soil cyanobacterium (Nostoc sp.) by high performance countercurrent chromatography [PDF]

open access: yes, 2014
High performance countercurrent chromatography (HPCCC) was successfully applied for the separation of nostotrebin 6 from cultivated soil cyanobacteria in a two-step operation.
Berthod   +13 more
core   +2 more sources

Study of decomposition products by gas chromatography-mass spectrometry and ion chromatography-electrospray ionization-mass spectrometry in thermally decomposed lithium hexafluorophosphate-based lithium ion battery electrolytes

open access: yes, 2015
In this work, the thermal decomposition of a lithium ion battery electrolyte (1 M LiPF6 in ethylene carbonate/ethyl methyl carbonate, 50/50 wt%) with a focus on the formation of organophosphates was systematically studied. The quantification of non-ionic
V. Kraft   +4 more
semanticscholar   +1 more source

Three dimensional liquid chromatography coupling ion exchange chromatography/hydrophobic interaction chromatography/reverse phase chromatography for effective protein separation in top-down proteomics.

open access: yesAnalytical Chemistry, 2015
To address the complexity of the proteome in mass spectrometry (MS)-based top-down proteomics, multidimensional liquid chromatography (MDLC) strategies that can effectively separate proteins with high resolution and automation are highly desirable ...
Santosh G. Valeja   +5 more
semanticscholar   +1 more source

Moldable capillary suppressor for open tubular ion chromatography based on a polymeric ion exchanger.

open access: yesTalanta Open, 2021
We successfully fabricated 45 μm bore microchannels in PVA-Poly(styrenesulfonate) cation exchange polymers. by casting aqueous prepolymer mixtures around fine tungsten wire mandrels, curing, crosslinking by thermal annealing, and subsequently removing ...
Fereshteh Maleki   +3 more
doaj  

Application of ion chromatography in determination of carboxylic acids and inorganic anions in selected drugs [PDF]

open access: yes, 2018
[EN] The focus of this work is the analysis of various drugs as well as the validation of a method for the analysis of the ascorbic acid in drugs using ion chromatography with suppressed conductivity.
Irizar Merino, Pablo
core  

Trapped ion mobility spectrometry and PASEF enable in-depth lipidomics from minimal sample amounts

open access: yes, 2020
A comprehensive characterization of the lipidome from limited starting material remains very challenging. Here we report a high-sensitivity lipidomics workflow based on nanoflow liquid chromatography and trapped ion mobility spectrometry (TIMS).
Barsch, A.   +8 more
core   +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

Effect of sodium bicarbonate residue on some characteristics of processed meat products

open access: yesFoods and Raw Materials, 2018
Using sodium bicarbonate (SB) in cooking meat products is a controversial subject. The aim of this study was to estimate an effect of different SB concentrations on the quality characteristics and organoleptic properties of meat in Kubideh Kebab, an ...
Behrouz Akbari-adergani   +4 more
doaj   +1 more source

Quantification of DNA Products Using Ion-Pair Reverse Phase Liquid Chromatography [PDF]

open access: yes, 2017
The transcription of DNA via RNA polymerases is a fundamental process in cellular systems. In eukaryotic cells, we observe transcription in the nucleus (via genomic DNA) as well as in the mitochondria (via mitochondrial DNA).
Bestwick, Megan, Wienkers, Henry
core   +1 more source

Peer Reviewed: Ion Chromatography Retrospective [PDF]

open access: yesAnalytical Chemistry, 2001
In the 1960s and early 1970s, various chromatographic methods were used to separate low molecular weight inorganic anions and cations; however, the separations were only moderately efficient, and detecting those analytes that did not absorb UV radiation was rather difficult. It was more common for researchers to determine these analytes by wet-chemical
openaire   +3 more sources

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