Seasonal variations in mercury concentrations in the coastal waters of Kalpakkam, southeast coast of India
Kalpakkam to monitor the seasonal variation in mercury (Hg) concentration. The Hg level (dissolved + acid leachable) ranged from 3 to 50 ppb for surface and 1.5 to 47.9 ppb for bottom-water samples, yielding an annual average concentration of 20.42