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Sains Malaysiana 44(7)(2015): 957–964 Dissolved
and Suspended Particulate Metals in Setiu River Basin, Terengganu,
Malaysia (Logam Terlarut dan
Partikulat Terampai di Lembangan Sungai Setiu, Terengganu, Malaysia) M.K. KOH1,
S.
SURATMAN1
& N. MOHD TAHIR1,2* 1Institute of Oceanography
& Environment, Universiti Malaysia Terengganu 21030 Kuala Terengganu,
Terengganu Darul Iman, Malaysia 2School of Marine
Science and Environment, Universiti Malaysia Terengganu 21030 Kuala Terengganu,
Terengganu Darul Iman, Malaysia Received: 26 September
2014/Accepted: 15 February 2015 ABSTRACT Dissolved and suspended particulate
metals (Al, Fe, Cd, Cu, Zn, Pb) in Setiu River basin, Terengganu
which is situated at coastal area of southern South China Sea were
investigated. The water samples were collected from nine stations
from June 2007 to January 2008, in conjunction with the Southwest
monsoon and Northeast monsoon. The average concentrations of dissolved
Al, Fe, Cd, Cu, Zn and Pb were (μg L-1):
50±60, (2.0±3.4) ×102, 2.5±2.6, 3.0±1.4, 7.5±5.1 and 6.0±5.0,
respectively. Meanwhile, the concentrations of suspended particulate
metals were (μg g-1): (13±10)%, (10±13)%, 15±13, 65±94,
(3.5±2.5) ×102 and (1.2±1.5) ×102, respectively. Seasonal variations
of dissolved and suspended particulate metals were observed. The
results were compared with selected Malaysian national rivers, world
average and established guidelines. In addition, the enrichment
of suspended particulate metals and the partitioning of metals between
dissolved and suspended particulate phases were discussed. Keywords: Dissolved and suspended
particulate metal; enrichment factor; metal partition coefficient;
Setiu River (Malaysia) ABSTRAK Logam terlarut dan partikulat
terampai (Al, Fe, Cd, Cu, Zn, Pb) di lembangan Sungai Setiu, Terengganu
yang terletak di perairan selatan Laut China Selatan telah dikaji.
Sampel air telah diambil dari sembilan stesen dari Jun 2007 sehingga
Januari 2008, bersesuaian dengan monsun Barat Daya dan Timur Laut.
Kepekatan purata logam terlarut Al, Fe, Cd, Cu, Zn dan Pb masing-masing
ialah (μg L-1):
50±60, (2.0±3.4) ×102, 2.5±2.6, 3.0±1.4, 7.5±5.1 dan 6.0±5.0.
Sementara itu, kepekatan logam partikulat terampai masing-masing
ialah (μg g-1): (13±10)%, (10±13)%, 15±13, 65±94, (3.5±2.5) ×102 dan
(1.2±1.5) x102. Variasi bermusim untuk logam terlarut dan partikulat
terampai telah diperhatikan. Hasil kajian telah dibandingkan dengan
beberapa sungai yang terdapat di Malaysia, nilai purata kepekatan
untuk dunia dan panduan piawai. Di samping itu, perkayaan untuk
logam partikulat bersama-sama dengan pembahagian logam antara fasa
terlarut dan partikulat terampai turut dibincangkan. Kata kunci: Faktor perkayaan; logam terlarut dan partikulat terampai;
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