Organochlorine pesticides (OCPs) are now largely banned in Malaysia. However, with their long persistence, their residues may still be in the environment and food chain. OCPs are lipid soluble and their determination in oil requires pre-extraction from the oil matrix followed by a clean-up procedure. The latter is to prevent deterioration of the column and contamination of the detector in the gas chromatography (GC) system used for quantifying the OCPs.

Main Research: Dr Halimah Muhamad