Kandungan dan sumber alkohol lemak di dalam sedimen muara di Sungai Kapar, Selangor

Norfariza Humra Awal Ali, and Yeoh, Lee Kwan and Mohd Talib Latif, and Mohamad Pauzi Zakaria, and Masni Mohd Ali, (2010) Kandungan dan sumber alkohol lemak di dalam sedimen muara di Sungai Kapar, Selangor. Sains Malaysiana, 39 (1). pp. 21-30. ISSN 0126-6039

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Abstract

A total of 13 fatty alcohols (C12- C24) including six branched compounds have been identified in seven surface sediment samples taken from Sungai Kapar, Selangor using computerized gas chromatography-mass spectrometry (GC-MS). Generally 65% of total fatty alcohols determined were short chain compounds (C12- C20) derived from marine organisms, 14% were long chained compounds (C21- C24) input of terrestrial plants and the rest were branched compounds from bacterial activity. C16 compound dominated all the sampling stations with concentrations ranged from 29.69 to 164.35 μgg-1 dry weight which constitute 32% of total fatty alcohols. Short chain/long chain fatty alcohols ratio [Σ(C12- C20)/Σ(C21- C22)] of each sampling stations had the value >1; indicating high content of short chain compounds from marine sources. Meanwhile, Alcohol Source Index (ASI) calculated using C22/C14 and C22/C16 ratios. C22/C14 ratio showed that stations Kp1, Kp2, Kp5 and Kp6 had a value >1 indicating the amount of C22 was higher than C14. Ratio of C22/C16 showed that all the sampling stations dominated by C16 compared to C22. The estuary of Sungai Kapar, Selangor was dominated by short chain fatty alcohols (C12- C20) especially C16 compound rather than long chain fatty alcohol (C21- C24).

Item Type:Article
Keywords:fatty alcohol; Sungai Kapar
Journal:Sains Malaysiana
ID Code:319
Deposited By:Mr Fazli Nafiah -
Deposited On:29 Dec 2010 09:37
Last Modified:15 Apr 2011 16:16

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