Journal of Oil Palm Research Vol. 11 No. 2  1999 Dec p.  89-97

Determination of chlorpyrifos in refined palm olein by GC-FPD and GC-ECD

Author(s): HALIMAH, M*; OSMAN, H*; AINIE, K*; TAN, Y A*; M D PAUZI, A**

Chlorpyrifos (a pesticide containing phosphorous and chlorine) from oil matrix was determined using gas chromatography (GC) with a flame photometric (FPD) and electron capture (ECD) detectors. In the first experiment, the detector (FPD) used gave recoveries (from palm olein samples spiked with chlorpyrifos at levels of 0.04-0.10 μg ml-1) ranging from 89% to 100% with coefficients of variation from 2.9% to 10.8%. In the second experiment, ECD showed recoveries (from palm olein spiked with chlorpyrifos at levels 0.02-0.10  μg ml-1) of greater than 97% with coefficients of variations ranging from 0.5% to 2%. The results showed that using GC, the ECD and FPD are suitable detectors for quantification of chlorpyrifos in oil matrix.

Keywords: , , , , ,

Author Information
* Palm Oil Research Institute of Malaysia, P.O. Box 10620, 50720 Kuala Lumpur, Malaysia.

** Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.

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