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Molecular mass calibration in size-exclusion chromatography of coal derivatives

✍ Scribed by Keith D. Bartle; Michael J. Mulligan; Norman Taylor; Terence G. Martin; Colin E. Snape

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
580 KB
Volume
63
Category
Article
ISSN
0016-2361

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✦ Synopsis

A number of procedures have been investigated for the calibration of a size-exclusion chromatography (s.e.c.) column in the determination of molecular mass (MM) distributions of coal derivatives. The behaviour of narrow fractions of coal extracts in the MM range 2003000 was compared with a variety of the more generally available calibration standards. Calibration with preparative s.e.c. subfractions of materials similar to those under study has been recommended. Polystyrene standards are satisfactory, however, for MM < 1000, but above this range other polymer standards should be sought. Universal and molar volume calibration do not apply to coal-derived materials.

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