Sains Malaysiana 31: 1-9 (2002)                                                                                                          Sains Bumi /

Earth Science

Trace Element Levels in the Sediments of Tanjung Karang Estuary,

Selangor, Malaysia

Che Abd Rahim Mohamed, Faeiza Buyong & Othman Hj. Ross

Pusat Pengajian Sains Sekitaran & Sumber Alam

 Fakulti Sains & Tekno1ogi

Unjversiti Kebangsaan Malaysia

43600 UKM Bangi, Selangor D.E., Malaysia

Mohd Azmi Mohd Lila

Fakulti Sains Perternakan

 Universiti Putra Malaysia Serdang,

 Selangor D.E., Malaysia

ABSTRACT

Sediment samples were obtained from six stations in the Tanjung Karang Estuary, Malaysia and analyzed for the trace elements such as Fe, Mn, Zn, Cu and Pb. Concentration of these elements ranged from 2.04-4.50 %, 446­-698 μgg^-1, 26.3-85.7 μgg^-1, 2.63-18.1 μgg^-1 and 10.6-28.0  μgg^-1 for Fe, Mn, Zn, Cu and Pb, respectively. Their concentration values also varied with depth at all stations. The concentration values of Mn and Fe recorded in Tanjung Karang Estuary were higher than those recorded earlier in the Straits of Johor and Juru, Penang, which were regarded as being relatively contaminated. Obtained ratios of metal/Fe at the Tanjung Karang estuary were higher than the polluted area at Kiel Bight, Germany. This indicates that the concentration of trace elements at the sampling sites were influenced by the mangrove system as biological source and not anthropogenically related.

ABSTRAK

Sampel sedimen diperolehi daripada enam stesen di muara Tanjung Karang, Malaysia untuk penganalisaan unsur surih seperti Fe, Mn, Zn, Cu dan Pb. Julat kepekatan yang diperolehi masing-masing adalah 2.04-4.50 %, 446­-698 μgg.^-1, 26.3-85.7 μgg^-1, 2.63-18.1 μgg^-1 dan 10.6-28.0 μgg^-1 untuk Fe, Mn, Zn, Cu and Pb. Nilai kepekatannya juga berubah mengikut kedalaman bagi kesemua stesen pensampelan. Kepekatan Mn dan Fe yang direkod di muara Tanjung Karang adalah tinggi berbanding dengan kawasan yang tercemar seperti yang dilaporkan di Selat Johor dan Juru, Pulau Pinang. Nisbah logam/Fe yang diperolehi di muara Tanjung Karang adalah tinggi berbanding dengan kawasan tercemar di Kiel Bight, Jerman. Ini menunjukkan kepekatan unsur surih di kawasan pensampelan mendapat pengaruh daripada sistem paya bakau sebagai sumber biologi dan tidak melibatkan kemasukan antropo genik.

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