Sains Malaysiana
37(4): 307-312(2008) Taburan
Sterol dalam Sedimen di Sungai Sepang Besar, Selangor (Sterol
Distribution in Sediment of Sungai Sepang, Selangor) Aminah Mag Piah, Masni Mohd Ali dan Che Abd. Rahim Mohamed Pusat Pengajian Sains Sekitaran dan Sumber Alam Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, Malaysia Mohamad Pauzi Zakaria Jabatan Sains Alam Sekitar, Fakulti Pengajian Alam Sekitar Universiti Putra Malaysia, 43400 Serdang Selangor, Malaysia Diserahkan: 1 April 2007 / Diterima: 3 April 2008 ABSTRAK Kajian taburan sterol
di Sungai Sepang Besar telah dijalankan pada 17 September 2005
dan 20 Disember 2005. Sampel sedimen telah diambil dengan menggunakan
pensampel cekau dari 12 stesen untuk menentukan sumber-sumber yang
berbeza bagi sterol dan untuk menentukan aras pencemaran bahan kumbahan
di sungai tersebut. Kromatografi Gas-Spektrometri Jisim telah digunakan
untuk menganalisis data. Hasil yang diperolehi menunjukkan kawasan
Sungai Sepang Besar didominasi oleh kolesterol, β-sitosterol
dan stigmasterol, manakala kawasan laut didominasi oleh ergosterol.
Secara keseluruhan, Sungai Sepang Besar diklasifikasikan sebagai
tercemar dengan kumbahan berdasarkan nisbah coprostanol/kolesterol
yang diperolehi. Kata kunci: Coprostanol;
kolesterol; sterol; Sungai Sepang ABSTRACT A study of sterol distribution in Sungai Sepang Besar
was carried out on 17th September 2005 and 20th
December 2005. Sediment samples were collected from 12 stations
using grab sampler to determine the sources of sterol and the level
of sewage contamination. Sterols were analyzed using Gas Chromatography-Mass
Spectrometry. The results obtained showed that cholesterol and terrestrial
plants (β-sitosterol and stigmasterol) dominated Sungai Sepang Besar
while coastal areas were dominated by ergosterol. It is concluded
that Sungai Sepang Besar was polluted with sewage based on coprostanol/cholesterol
ratios. Keywords:
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