Author/Authors :
Lakshmanasenthil، Shanmugaasokan نويسنده 1CMS College of Science and Commerce, Chinnavedampati (PO), Coimbatore, Tamil Nadu, India , , Vinothkumar، Thirumalairaj نويسنده 1CMS College of Science and Commerce, Chinnavedampati (PO), Coimbatore, Tamil Nadu, India , , AjithKumar، Thipramalai Thankappan نويسنده Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India , , Marudhupandi، Thangapandi نويسنده Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India , , Veettil، Dhaneesh Kottila نويسنده Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India , , Ganeshamurthy، Raghunathan نويسنده Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India , , Ghosh، Swagat نويسنده Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India , , Balasubramanian، Thangavel نويسنده Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608 502, Tamil Nadu, India ,
Abstract :
Study on the accumulation level of heavy metals was conducted on sediment and fishes from estuaries of Bay of
Bengal. Heavy metals were determined by using Inductively Coupled Plasma Optical Emission Spectrometer
(ICP-OES) and the results were compared to permissible limits of WHO/USEPA. The accumulation patterns of Fe and
Cd were found predominantly in all samples tested when correlated with other metals. It was found that the
concentration of metals such as Cd (3.90±0.25 ?g/g), Cr (0.44 ± 0.05 ?g/g), Ni (0.33 ± 0.01 ?g/g), and Mn (1.1 ± 0.11 ?g/g)
were exceeding the permissible limit, whereas Fe, Co, Pb, and Zn were found within the limit of WHO/USEPA at station 1.
In station 2, Cd (16.5 ± 0.4 ?g/g), Mn (0.67 ± 0.11 ?g/g), and Cr (0.80 ± 0.01 ?g/g) were exceeding the permissible limit,
whereas Fe, Co, Pb, Ni, and Zn were found within the limit. This study emphasizes that Cd and Mn levels in both stations,
are far higher than the acceptable values set by WHO/USEPA and may therefore present human health hazards. It is
therefore mandatory to carry out extensive research to evaluate the possible environmental risk factors in the vicinity of
both estuaries with respect to heavy metals.
