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Determination of sulfur contents of vegetable and marine oils by ion chromatography and indirect ultraviolet photometry of their combustion products

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Journal of the American Oil Chemists’ Society

Abstract

A simple method for the determination of total sulfur content in vegetable and marine oils is described. The method involves combustion of the oil sample in an oxygen bomb to convert all forms of sulfur to sulfate ions with subsequent determination of the sulfate by ion chromatography and indirect ultraviolet detection. The ultraviolet system described is more sensitive than conductivity detection and enables the method to be applied more widely.

Application of the method to a variety of vegetable and marine oils showed the general occurrence of sulfur in fats and oils, albeit often at a low level. Among the samples examined, crude Canola oil had the highest sulfur content (25.0 mg/kg) followed by the marine oils (5.8-15.2 mg/kg) and the non-Cruciferae vegetable oils (2.0-6.1 mg/kg).

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Author notes

  1. R. C. Wijesundera

    Present address: Ceylon Institute of Scientific and Industrial Research, P.O. Box 787, Colombo, Sri Lanka

Authors and Affiliations

  1. Canadian Institute of Fisheries Technology, Technical University of Nova Scotia, P.O. Box 1OOO, B3J 2X4, Halifax, Nova Scotia, Canada

    R. C. Wijesundera & R. G. Ackman

  2. Department of Food Science, University of Guelph, NIG 2W1, Guelph, Ontario, Canada

    V. Abraham & J. M. deMan

Authors
  1. R. C. Wijesundera
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  2. R. G. Ackman
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  3. V. Abraham
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  4. J. M. deMan
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Wijesundera, R.C., Ackman, R.G., Abraham, V. et al. Determination of sulfur contents of vegetable and marine oils by ion chromatography and indirect ultraviolet photometry of their combustion products. J Am Oil Chem Soc 65, 1526–1530 (1988). https://doi.org/10.1007/BF02898321

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  • DOI: https://doi.org/10.1007/BF02898321

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