Heavy metals (Cd, Cu, Pb and Zn) concentrations in Telescopium telescopium from Dumai coastal waters, Indonesia
2005
Yap,C.K. | M.S. Kamarudin | A. Ismail, | B. Amin | A. Arshad
Concentrations of cadmium, copper, lead and zinc in the marine gastropod, Telescopium telescopium, weredetermined to provide background information on heavy metal levels in the Straits of Malacca in the Indonesianside. Samples of T. telescopium were collected from intertidal Dumai coastal waters at four stations in July 2004.The results of the present study showed that metal concentrations in the soft tissue of T. telescopium varied atdifferent sampling stations: 0.33 - 0.69 )1g/g; 9.38 - 52.29 )1g/g; 1.73 - 10. 78 )1g/g; 14.69 - 69.87 )1g/gdry weight far cadmium, copper, lead and zinc, respectively. Samples from Sungai Dumai station accumulatedmare heavy metals when compared to other stations. Smaller T. telescopium accumulate mare metals than largerones. Negative correlations between metal concentrations and size (length and weight) were observed (except Cdand Cu in samples from Sungai Mesjid) with some variation in the correlation coefficients which indicated metalregulation by the T. telescopium. Sungai Dumai showed the highest Metal Pollution Index (MPl) of 12.57 andTomlinson Pollution Load Index (PLI) of 34.35 with Lubuk Gaung showing the lowest with 3.26 and 8.89,respectively. In general, the MPI and PU values indicate that metal pollution in Dumai coastal waters is nota serious threat yet and no drastic rectification measures are needed. However, as one of the most developingregions in Sumatera, further studies are necessary to assess temporal variation in metal accumulation and concentration for this species and other possible indicator organisms as well as in sediment from the surrounding areas in order to gain a better understanding of pollution status in Dumai coastal waters.
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