Journal of the Marine Biological Association of India

Volume 38 Issue 1&2

Spatial and seasonal variation in heavy metals Iron, Zinc, Maganese and Copper in the Industrial region of the ennore estuary, Madras

S. Rajathy and Jayapaul Azariah

An estuarine surveillance programme, with a view to assess the current status.of the water quality of estuarine zone of Ennore, Madras was carried out during the period fmm November 1987 to October, 1988. Water and sediment samples were collected from three different stations in the estuarine zone of Ennm. The levels of iron, zinc, manganese and copper were estimated in water and sediment samples. Then were only slight seasonal fluctuations in the levels of metals in the water as well as sediment with higher concentrations occurring during the monsoon seasons. The concentration of iron, zinc, manganese and copper in water and sediment exceeded the admissible limit. The pattern of changes in trace metal levels is discussed with reference to variations at the three stations and during different seasons. 


Heavy metals, concentration, seasonal variations, Ennone esturay

Date : 30-12-1996