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International Journal of Marine Science 2013, Vol.3, No.30, 238-243
http://ijms.sophiapublisher.com
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According to Gundacker (1999), zebra mussels also
can accumulate high amounts of potentially toxic
heavy metals. The objective of this study was to
investigate the relationship between heavy metal
concentrations in the different geochemical speciation
of sediment and metal concentrations in soft tissues of
bivalve mollusc
A. indica
.
2 Result and Discussion
Bioavailability of contaminant in the environment is a
function of processes working on them, either increase
or decrease their mobility, therefore it will be readily
available (more available), less available for organism
accumulate in the body.
The total concentrations of Cd, Cu, Pb and Zn and its
percent contribution in all the geochemical fractions
(EFLE/F1, acid-reducible/F2, oxidisable-organic/F3,
resistant/F4) of sediment are presented in Figure 1 and
Figure 2, respectively.
From Figure 1, it can bee seen that total concentration
of heavy metals Cu, Pb, and Zn in Tanjung Pasir (TJP)
are higher than in Panimbang (PNB) estuary. This is
because there are many industries, housings, and
commercial activities in Tanjung Pasir. Beside that,
coastal area of Tanjung pasir is located close to Jakarta
Bay which has level pollution medium-heavy category.
According to Bappedalda (2005), seawater carried by
surface current from Jakarta Bay flushed into Tanjung
Pasir. On the contrary, Panimbang coastal area has
lower concentration of heavy metals due to low input
Figure 1 Heavy metals content (µg/g) Cu (a), Pb (b), dan Zn (c)
in sediment of Tanjung Pasir (TJP) and Panimbang (PNB)
estuary
Figure 2 Percentage fractionation (F1, F2, F3 and F4) of heavy
metals (%) Cu (a), Pb (b), Zn (c), in sediment of Tanjung Pasir
(TJP) and Panimbang (PNB) estuary
of industrial activities and housings.
Figure 2 showed that percent of non resistant/non
residual fraction (F1 + F2 + F3) of heavy metals Cu,
Pb, and Zn in Tanjung Pasir coastal area is higher than
in Panimbang. This suggests that in Tanjung Pasir
surroundings, anthropogenic activities is more
dominant compared to Panimbang. Moreover, Figure 3
Figure 3 Heavy metals content/bioaccumulation of Cu (a), Pb
(b), Zn (c) in
A. indica
size large, medium, and small collected
from Tanjung Pasir (TJP) and Panimbang (PNB) estuary