Geolipid Hydrocarbons In Surface Sediments From The Coastal Area Of Rajang, Sarikei

Fairous, Binti Salleh (2005) Geolipid Hydrocarbons In Surface Sediments From The Coastal Area Of Rajang, Sarikei. [Final Year Project Report] (Unpublished)

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Abstract

The surface sediments collected from ten sampling sites located at the coastal area of Rajang- Sarikei The samples were analyzed for aliphatic hydrocarbons and polycyclic aromatic hydrocarbons (PAHs) content by using hiah resolution capillary gas chromatography/flame ionization detector (GC/FID). The concentration of total aliphatic hydrocarbons (TAHs) and PA Hs are in the range 25.4 ug/g to 457.8 pg/g (dry weight) and 1 .32 pg/g to 50.40 gg/g (dry weight), respectively. The carbon preference index (CPI) together with Other hydrocarbon biomarker indices showed that sediments located at the Rajang estuary and near to the coastal area were affected by high level of biogenic input. The sediments at deep water were considered to receive a mixture of both anthropogenic and biogenic inputs. Q-mode cluster analysis was performed to classify the sampling sites into groups according to their probable input sources. This results of this analysis showed that sediments located at the estuary and near to the coastal area were affected by high level of biogenic input. Combinations of both anthropogenic and biogenic input were observed for the sediments located at the deep sea water area. The distribution pattern of hydrocarbons in the sediments for this area is similar to distribution of hydrocarbons in petroleum product organic matter and input from atmosphere.

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