Premium
Calibration and molecular weight calculations in GPC using a new practical method for dispersion correction—GPCV2
Author(s) -
Yau W. W.,
Stoklosa H. J.,
Bly D. D.
Publication year - 1977
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1977.070210717
Subject(s) - calibration , dispersion (optics) , computation , position (finance) , analytical chemistry (journal) , distribution (mathematics) , mathematics , computer science , materials science , chromatography , algorithm , chemistry , statistics , mathematical analysis , physics , optics , economics , finance
The method of Balke, Hamielec, LeClair, and Pearce for GPC calibration and molecular weight computation is reviewed and evaluated. A new method, called GPCV2, is proposed which uses the single broad molecular weight distribution (MWD) standard for calibration developed by those workers, but which also incorporates the chromatographic dispersion σ to make the method more accurate in general use. Equations are presented for computing the relationship between actual MW and retention volume V R under the chromatographically broadened curves. This relationship is then compared to those obtained by using the Balke et al. method and the peak position method.