Journal of Oil Palm Research Vol. 16 No 2  2004 Dec p.  30-36

Optimization of the sweep co-distillation clean-up method for the determination of organochlorine pesticide residues in palm oil

Author(s): HALIMAH Muhamad* ; MD PAUZI Abdullah** ; TAN Yew AI* ; SOH Shiau Chian**

The optimum conditions were developed for the quantitative recovery of organochlorine pesticide residues in palm oil using a commercial sweep co-distillation apparatus. Under the optimum conditions (245oC distillation temperature, 250 ml min -1 nitrogen flow rate, 45 min sweep time) and using a trap packed with sodium sulphate and partially deactivated Florisil, the recoveries of 14 organochlorine pesticide residues at ppm and ppb levels in a spiked oil matrix were> 80%, with coefficients of variation ranging from 5.6% – 9.9%. However, the recovery for endrin ketone was below 80% with a coefficient of variation of 8.5%. The cleaned-up extracts were quantified by gas chromatography using a micro-electron capture detector with a fused silica capillary column containing a non-polar bonded phase.

Keywords: , , , ,

Author Information
*Malaysian Palm Oil Board, PO Box 10620,50720 Kuala Lumpur, Malaysia
E-mail :

**Universiti Kebangsaan Malaysia,43650 UKM Bangi, Selangor, Malaysia

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