ASSESSMENT OF HEAVY METAL DISTRIBUTION IN DIFFERENT SEASONS AT AGNIAR ESTUARY, TAMIL NADU, INDIA

Author(s): R. Saraswathi and P. Sumithra*

Abstract: Today aquatic pollution is a serious and emerging problem in almost of all the countries throughout the globe. The increasing effect of heavy metals has an increasing effect on aquatic as well as terrestrial organisms. Hence, monitoring of heavy metals is the need of the hour and so the presence study was aimed at assessing commonly occurring heavy metals in water for the four seasons of the year in Agniar estuary. The order of heavy metals in terms of increasing concentration was Ar > Pb > Cd > Cr > Cu > Zn > Fe > Mn. A perusal of the levels of heavy metals obtained in the present study with those of the CPCB (India) reveals that the metals like Fe, Zn, Cu and Mn recorded safe levels while that of Cr, Cd, Pb and Ar were on the higher side. Among the four seasons minimum levels were recorded during the pre-summer and maximum levels during the raining seasons.

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