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Issue 9, 2000
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Estimation of trace amounts of benzene in solvent-extracted vegetable oils and oil seed cakes

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Abstract

A new method is presented for the qualitative and quantitative estimation of trace amounts (up to 0.15 ppm) of benzene in crude as well as refined vegetable oils obtained by extraction with food grade hexane (FGH), and in the oil seed cakes left after extraction. The method involves the selection of two solvents; cyclohexanol, for thinning of viscous vegetable oil, and heptane, for azeotroping out trace benzene as a concentrate from the resulting mixture. Benzene is then estimated in the resulting azeotrope either by UV spectroscopy or by GC-MS subject to availability and cost effectiveness of the latter. Repeatability and reproducibility of the method is within 1–3% error. This method is suitable for estimating benzene in vegetable oils and oil seed cakes.

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Publication details

The article was received on 13 Mar 2000, accepted on 26 Jun 2000 and first published on 09 Aug 2000


Article type: Paper
DOI: 10.1039/B001978J
Analyst, 2000,125, 1687-1689

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    Estimation of trace amounts of benzene in solvent-extracted vegetable oils and oil seed cakes

    A. Masohan, G. Parsad, M. K. Khanna, S. K. Chopra, B. S. Rawat and M. O. Garg, Analyst, 2000, 125, 1687
    DOI: 10.1039/B001978J

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