Sains
Malaysiana 37(4): 337-340(2008)
Distribution of Some Geochemical Elements in the Surface
Sediment of Kerteh Mangrove Forest, Terengganu, Malaysia
(Taburan Beberapa Elemen Geokimia dalam Sedimen Permukaan
di Hutan Paya Bakau Kerteh, Terengganu, Malaysia)
Kamaruzzaman Yunus & Ong Meng Chuan
Institute of Oceanography and Maritime Studies
International Islamic University Malaysia
Bandar Indera Mahkota, 25200 Kuantan
Pahang Malaysia
Received: 18 January 2008 / Accepted: 19 March 2008
ABSTRACT
Surface sediments collected from two transects (30 sampling
points) in the Kerteh mangrove forest had been analyzed for Co,
Cu, Pb, Zn and Cr concentrations with the Inductively Coupled Plasma-Mass
Spectrometry (ICP-MS). The
average concentration of Co was 8.91±1.89 µg/g dry weight, Cu was
29.0±12.8 µg/g dry weight, Pb was 11.7±6.85 µg/g dry weight, Zn
was 22.3±13.7 µg/g dry weight and Cr was 13.2±9.07 µg/g dry weight. Their concentrations are significantly higher
near the front mangrove and decline as the sampling points of each
transect near the back mangrove area. The
calculated enrichment factors (EF) obtained for Zn and Cr can be
considered to have the terigeneous in sources while Co, Cu and Pb,
which had slightly higher value, were probably influenced by anthropogenic
input.
Keywords : Enrichment
factor; mangrove
forest; surface sediment
Abstrak
Sedimen permukaan yang dikutip dari dua transet (30 sampel
permukaan) di kawasan hutan paya bakau Kerteh telah diukur bagi
logam Co, Cu, Pb, Zn dan Cr dengan menggunakan peralatan Inductively
Coupled Plasma-Mass Spectrometry (ICP-MS).
Purata kepekatan Co adalah
8.91±1.89 µg/g berat kering, Cu adalah 29.0±12.8 µg/g berat kering,
Pb adalah 11.7±6.85 µg/g berat kering, Zn adalah 22.3±13.7 µg/g berat kering dan Cr adalah 13.2±9.07 µg/g berat kering. Secara signifikannya, kepekatan kesemua logam
adalah tinggi di kawasan hadapan hutan paya bakau dan menjadi berkurangan
pada transek di kawasan belakang hutan paya bakau.
Faktor pengkayaan (EF) yang dikira bagi Zn dan Cr adalah
didapati menghampiri 1 dan boleh dianggap terhasil daripada sumber
semulajadi, manakala Co, Cu dan Pb mempunyai nilai EF yang lebih
tinggi memberikan gambaran bahawa sumber Mn mempunyai sedikit pengaruh
daripada antropogenik.
Kata kunci: Faktor
pengkayaan; hutan paya bakau; sedimen permukaan
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