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Partial argentation resin chromatography (PARC): I. Effect of percent silver on elution and separation of methyl octadecadienoate isomers

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Journal of the American Oil Chemists Society

Abstract

Partial argentation resin chromatography (PARC) for the separation of octadecadienoate ester isomers was investigated. In comparison to saturated silver resin chromatography, the time necessary to elute methylcis,cis-octadecadienaotes was dramatically shortened when columns containing sulfonic acid ion exchange resin silvered in the range of 60~90% of theoretical (meaning 60~90% of the sulfonic acid protons in the resin were replaced by silver ions) were used. Methods for preparation and silvering of the resin are discussed. The XN1010 resin (Rohm and Haas) was analyzed for total sulfonic acid groups and the amount of silver that can be incorporated by one or 2 treatments with silver nitrate was determined. A series of partially silvered resin columns was prepared and samples of methyl linoleate were eluted to study the effect of the percentage silvering on elution volumes and peak shapes. Twenty-gram samples of mixtures ofcis,trans- andtrans,trans- and oftrans,cis- andcis,cis-methyl 12,15-octadecadienoates were separated on a 91% PARC (91% silvered) column.

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References

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Authors and Affiliations

  1. Northern Regional Research Center, Agricultural Research, Science and Education Administration, USDA, 61604, Peoria, IL

    R. O. Adlof, H. Rakoff & E. A. Emken

Authors
  1. R. O. Adlof
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  2. H. Rakoff
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  3. E. A. Emken
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Adlof, R.O., Rakoff, H. & Emken, E.A. Partial argentation resin chromatography (PARC): I. Effect of percent silver on elution and separation of methyl octadecadienoate isomers. J Am Oil Chem Soc 57, 273–275 (1980). https://doi.org/10.1007/BF02662205

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  • DOI: https://doi.org/10.1007/BF02662205

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