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BaP is a member of a class of compounds known as PAHs which generally occur as complex mixtures and not as single compounds (Figure 1). PAHs are primarily by-products of incomplete combustion. These combustion sources are numerous and include natural sources such as wildfires, industrial processes, transportation, energy production and use, food preparation, smoking tobacco … Read more

This test method describes a method for the determination of hydrocarbons (n-alkanes) in vegetable oils and fats using gas chromatography-mass 297 spectrometric (GCMS) detection. Vegetable oils may be contaminated by mineral fuel oils (dieseloil) due to the use of transport/storage facilities which are not strictly for transport/storage of food-grade, or due to other reason. The … Read more

The method involves the extraction of chlorpyrifos with hexane acetonitrile. Chlorpyrifos is preferentially partitioned into the polar acetonitrile layer while the bulk of the lipids remains solubilized in the non-polar hexane. The acetonitrile extract are subjected to clean-up procedure through a silicic acid column. The chlorpyrifos is analysed by gas chromatography equipped with an electron … Read more

This method is used to determine the concentration of 15 organochlorine pesticides in edible oil using capillary column with electron detector (ECD). Main Research: Halimah Muhamad

Deltamethrin is the common name for (S)-α- cyano-3-phenoxybenzyl(1R)-cis-3-(2,2- dibromovinyl)-2,2-dimethylcyclopropane carboxylate with the structure as in Figure 1. It is a colourless crystalline solid with a melting point of 98o C-100o C. The vapour pressure is 0.002 mPa at 25o C and it is almost insoluble in water with a solubility of 0.002 g litre-1 at … Read more