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GPC/SEC Tipps&Tricks
Entwickelt von PSS für LCGC: Praktische Tipps und Ratschläge für GPC/SEC-Benutzer.
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Veröffentlicht
T&T GPC/SEC: Do's and Don'ts in GPC/SEC Light Scattering
Light scattering (LS) is one of the few absolute, theoretically founded methods for the determination of molar mass and molecular size of polymers and biopolymers. Light scattering instruments became…
Sprache
Veröffentlichungsnummer
20296
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2009
Veröffentlicht
26.02.2009
Ausgabe
2
Autor
D. Held
T&T GPC/SEC: Evaporative Light Scattering Detection in GPC/SEC
Introduced in the 1980s, evaporative light scattering detectors (ELSDs) have been used in liquid chromatography (LC) as sensitive, universal detectors for the detection of non-volatile sample…
Sprache
Veröffentlichungsnummer
20411
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2013
Veröffentlicht
28.10.2013
Ausgabe
10
Autor
D. Held
T&T GPC/SEC: Examining accuracy and precision in GPC/SEC
Any analytical method has its intrinsic inaccuracy. It is important to know these limits and the accuracy and presicion to interpret the results in the right way.
Sprache
Veröffentlichungsnummer
20271
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2008
Veröffentlicht
16.04.2008
Ausgabe
2
Autor
F. Gores, P.Kilz
T&T GPC/SEC: Finding the Right Standards
Polystyrenes (PS) are the most commonly used reference standards in gel permeation chromatography/size-exclusion chromatography (GPC/SEC) for nearly all organic GPC/SEC separations including high…
Sprache
Veröffentlichungsnummer
20447
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2015
Veröffentlicht
18.12.2015
Ausgabe
6
Autor
D. Held, J. Preis, F. Gores
T&T GPC/SEC: Flow Marker - An Easy Concept to Increase Reproducibility
Experienced gel permeation chromatography/size-exclusion chromatography (GPC/SEC) users know that equilibration of the columns takes much longer than the time needed by the pump to produce a constant…
Sprache
Veröffentlichungsnummer
20449
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2016
Veröffentlicht
21.04.2016
Ausgabe
4
Autor
D. Held, W. Radke
T&T GPC/SEC: From a Chromatogram to the Molar Mass Distribution
Molar masses cannot be measured directly by gel permeation/size-exclusion chromatography (GPC/SEC). The direct results of a GPC/SEC run are chromatograms or elugrams, which show the detector signal…
Sprache
Veröffentlichungsnummer
20434
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2014
Veröffentlicht
17.12.2014
Ausgabe
12
Autor
P. Kilz, D. Held
T&T GPC/SEC: GPC/SEC for Membrane Analysis
Membranes play an important role in living species as well as in technical processes, including in human care (for example, in kidney treatment). This instalment of Tips & Tricks discusses gel…
Sprache
Veröffentlichungsnummer
20445
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2016
Veröffentlicht
28.10.2016
Ausgabe
10
Autor
D. Held, P. Kilz
T&T GPC/SEC: High Temperature GPC versus Ambient GPC
Gel permeation chromatography/size-exclusion chromatography (GPC/SEC) is the standard technique to determine the molar mass distribution of synthetic macromolecules. However, some kinds of polymers…
Sprache
Veröffentlichungsnummer
20479
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2019
Veröffentlicht
29.08.2019
Ausgabe
8
Autor
D. Held, P. Montag
T&T GPC/SEC: How do I calibrate a GPC/SEC system?
GPC/SEC is the method of choice for characterizing macromolecules by distribution (MMD). It is an easy to use method and measurements can be done using standard LC equipment, proper high resolution…
Sprache
Veröffentlichungsnummer
20273
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2008
Veröffentlicht
04.12.2008
Ausgabe
6
Autor
D. Held
T&T GPC/SEC: How do I find the optimum sample concentration and injection volume for my GPC/SEC measurements?
Larger signals and improved signal-to- noise ratios can be achieved by increasing the sample concentration or the injection volume. However, a large signal is not always the best answer and does not…
Sprache
Veröffentlichungsnummer
20246
Publication Type
Tip&Trick
Quelle
The Column
Jahr
2007
Veröffentlicht
01.03.2007
Ausgabe
2
Autor
T. Hofe