Sains Malaysiana 33(2): 147-156 (2004)                                                                                      Sains Bumi /

Earth Science

Taburan Kepekatan Kobalt, Kuprum, Zink dan Plumbum

di dalamSedimen Dasar Muara Sungai Terengganu

(Distribution of Cobalt, Copper, Zinc and Lead Concentration at the Bottom

Sediments of Terengganu River Estuary)

Kamaruzzaman Yunus, Ong Meng Chuan & Willison Kung Yee See

Department of Marine Science

Faculty of Science & Technology

Kolej Universiti Sains & Teknologi Malaysia

21030 Kuala Terengganu, Malaysia

ABSTRAK

Sampel sedimen dasar yang diperolehi daripada 19 stesen penyampelan di muara Sungai Terengganu telah dianalis is untuk mendapatkan taburan kepekatan Co, Cu, Zn dan Pb. Purata kepekatan bagi Co, Cu, Zn dan Pb adalah masing-masing 7.01 ± 1.26 µg/g berat kering, 36.7 ± 25.9 µg/g berat kering, 83.3 ± 52.4 µglg berat kering dan 122.5 ± 25.7 µg/g berat kering. Secara kesimpulannya, tahap pencemaran Co, Cu, Zn dan Pb adalah masih terkawal dan tidak menunjukkan tahap pencemaran logam berat yang serius. Kepekatan Logam didapati meningkat dengan pengurangan niLai min saiz partikel dan ini mengesyorkan hubungan logam yang baik terhadap sedimen yang lebih halus.

ABSTRACT

Bottom sediment samples from 19 stations of Terengganu River estuary were analyzed for the concentration of Co, Cu, Zn and Pb. The average concentration of Co, Cu, Zn and Pb were 7.01 ± 1.26 µg/g dry weight, 36.7 ± 25.9 µg/g dry weight, 83.3 ± 52.4 µg/g dry weight dan 122.5 ± 25. 7 µg/g dry weight, respectively. Generally, the concentration of Co, Cu, Zn and Pb at present are not widespread enough as to have much influence on pollution of that area. The concentration of these metals increased with the decrease of mean size, suggesting their association with the fine fraction of the sediment.

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