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: Cholesterol; coprostanol; sterol; Sungai Sepang

 

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