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10 LIVRES EN ANGLAIS EN RAPPORT AVEC «ISOCRATIC»
Découvrez l'usage de
isocratic dans la sélection bibliographique suivante. Des livres en rapport avec
isocratic et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
The Essence of Chromatography
4.4.3 Selection of Gradient or Isocratic Methods In reversed,phase
chromatography method development is often begun with a gradient elution
separation. From this separation it is possible to determine whether isocratic or
gradient elution is ...
2
HPLC Methods for Recently Approved Pharmaceuticals
HPLC VARIABLES Column: 250 × 4.6 5 μm endcapped Purospher RP-18
Column temperature: 25 Mobile phase: Isocratic.MeCN:water 60:40. Gradient.
MeCN:water from 25:75 to 90:10 over 30 min, maintain at 90:10 for 10 min.
3
High Performance Liquid Chromatography & Capillary ...
3.4 Isocratic versus Gradient Pumping Systems 3.4.1 Isocratic Pumping Systems
Isocratic elution is commonly used for the elution of analytes from the column. In
isocratic elution, the mobile phase is kept constant throughout the analysis.
Andrea Weston, Phyllis R. Brown, 1997
4
High-Performance Gradient Elution: The Practical Application ...
—William Shakespeare, Hamlet Resolution in gradient elution can be measured
in the same way as for isocratic separation [Equation (2.6) and Fig. 2.1]. An
equation for gradient resolution that corresponds to Equation (2.7) for isocratic
elution ...
Lloyd R. Snyder, John W. Dolan, 2007
5
Hplc Of Biological Macro- Molecules, Revised And Expanded
This in turn precludes the use of isocratic separation, where it is necessary that
all compounds elute within a fairly narrow retention range, e.g., 1 < k′ < 20. In
gradient elution, on the other hand, conditions can usually be arranged so that
each ...
Karen M. Gooding, Fred E. Regnier, 2002
6
Encyclopedia of Chromatography
... the magnitude of solute retention in LLPC, measured under isocratic condition
by the retention factor, k', is given by. k'. = (1) where K is the partition coefficient of
the solute in the two-phase system employed, Vm is the volume of the mobile ...
7
Scale-Up and Optimization in Preparative Chromatography: ...
selected arbitrarily may vastly influence the separation performance, we can
conclude that both gradient elution and displacement chromatography generally
outperform isocratic elution in all cases in which this last method requires
extensive ...
Anurag Rathore, Ajoy Velayudhan, 2002
8
CRC Handbook of Chromatography: Analysis of Lipids
... 17:3; or 4:1) Methanol-water (9:1) Isocratic elution; UV detection; flow rate: 1 ml
/min Isocratic elution; UV and RI detection; flow rate: 2 ml/min Isocratic or gradient
elution; UV and/or RI detection; flow rate: 1-2 ml/min Isocratic elution; UV and ...
Kumar D. Mukherjee, Nikolaus Weber, 1993
9
Taxol: Science and Applications
The same analytical group later collaborated with Wheeler21 and developed an
isocratic system that was applied to the study of a large number of T. brevifolia
samples of various genetic, epigenetic, and environmental origins.
10
Practical HPLC Method Development
However, isocratic methods are often preferred and may be required. When an
initial chromatogram suggests a wide retention range (0.5 > k > 20) for an ionic
sample, the use of an ion-pair reagent often permits isocratic separation with 0.5
< k ...
Lloyd R. Snyder, Joseph J. Kirkland, Joseph L. Glajch, 2012
10 ACTUALITÉS CONTENANT LE TERME «ISOCRATIC»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
isocratic est employé dans le contexte des actualités suivantes.
Cisplatin in tissues: Liver and kidney distribution by LC/MS
A simple isocratic elution using methanol in aqueous formic acid was sufficient to separate the two analytes which were detected following ... «separationsNOW.com, juil 15»
HPLC Yet More Sensitive and Selective
For extra-column dispersion, Dr. Hong examined an isocratic separation with a minimally retained compound. “Extra-column dispersion is most ... «Genetic Engineering & Biotechnology News, juin 15»
Just add water: A novel electrodialytic ion exchange device
... six weeks without a measurable change in its electrical or chromatographic behavior, conducting over 500 gradient and isocratic injections. «separationsNOW.com, juin 15»
Does size matter? Separations on guard columns for fast sample …
It is operated in isocratic elution mode enabling the connection to a refractive index detector (RID) which provides universal compound ... «BMC Blogs Network, mai 15»
Recycling preparative HPLC for isolation of styryl-lactones from …
Further separations were done by using Recycling Preparative HPLC over ODS using isocratic solvent of methanol-water as mobile phase. «Phys.Org, mai 15»
Macroscopic and Macromolecular Specificity of Alkylphenol …
An isocratic mobile phase of 60:35:5:0.1 ACN:isopropanol:H2O:TFA with a 1 ml/min flow rate at room temperature was used, and analytes were ... «Nature.com, avril 15»
Europe faces choice of isolation or unification as history moves on
Some 60 years ago Karl Jaspers, a European philosopher making an "Isocratic" case, observed that "The world had become European through ... «Global Times, avril 15»
ACQUITY UPC2 System and Columns
Adding the Waters ACQUITY QDa® Detector and ACQUITY Isocratic Solvent Manager allows for a much higher level of confidence with peak ... «Labmate Online, janv 15»
Trouble Free HPLC Analysis of Creams and Lotions: Beautiful …
A: Of course, it could be used for an isocratic system with no problems. The material is very efficient so it is the same efficiency as particles. «SelectScience.net, déc 14»
The science of airport bomb detection
Each of these can be performed with one solvent, such as dropping water on your shopping list – known as isocratic (Greek for "equal power") ... «Phys.Org, déc 14»
