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Heavy metal concentration in seawater and sediment of Gulf of Mannar and Palk Bay, southeast coast of India

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Title Heavy metal concentration in seawater and sediment of Gulf of Mannar and Palk Bay, southeast coast of India
 
Creator Palanichamy, S
Rajendran, A
 
Description 116-119
An investigation was carried out to delineate the levels of heavy metals
both in the seawater and sediments from the Gulf of Mannar and Palk Bay.
The data, obtained during the year 1995 revealed that Cd could not be detected
in the waters of  Kanyakumari. However,
at other stations the levels of Cd were in the order of Arumuganeri >
Tuticorin > Thondi > Mandapam . In contrast, Pb levels were found to be
maximum at Kanyakumari and minimum at Arumuganeri, while Hg was found to be maximum
at Arumuganeri and minimum at Mandapam. Cd levels were found to decrease towards sea from the coast at
Tuticorin. However no definite trend was observed at Mandapam and Thondi.
Unlike Cd, Pb showed seaward increasing trend at Thondi transect. However, no
definite trend was evident for other transects as seen for Cd. Bottom waters showed
higher concentration of Cd and Pb as compared to those in surface water. Hg did
not show any trend in its distribution. Data on sediments showed that Cd
registered maximum levels at Arumuganeri (4.33 ppm) while Kanyakumari exhibited
the minimum (0.4 ppm). Similarly the levels of Pb were found to be minimum (1.15
ppm) at Kanyakumari . In conclusion, among the transects studied, Arumuganeri
appeared to be polluted.
 
Date 2014-01-07T12:10:04Z
2014-01-07T12:10:04Z
2000-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25332
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.29(2) [June 2000]