Mercury contamination in the ambient media in and around the World Heritage Site: Indian Sundarbans
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 7
Abstract
We analyzed the concentrations of dissolved mercury and biologically available mercury in the surface sediment during premonsoon, monsoon and postmonsoon seasons in the year 2015 in 12 selected stations in and around Indian Sundarbans deltaic region. Analyses were done by Atomic Absorption Spectrophotometer (Perkin Elmer: Model 3030). Significant variation of dissolved mercury was observed between seasons with highest values in monsoon followed by postmonsoon and premonsoon. Contrasting picture was observed in case of biologically available mercury in the surface sediment with highest values in premonsoon followed by postmonsoon and monsoon. Sampling stations like Lothian island, Jambu island, Chotomollakhali, Bali island, Sajnekhali, Bagmara exhibited no trace of mercury in the aquatic phase and sediment. The mercury was Below Detectable Level (BDL) in the aquatic phase around Gosaba in all the seasons.
Authors and Affiliations
Shankhadeep Chakraborty, Sujoy Biswas, Nabonita Pal, Sufia Zaman, Abhijit Mitra
Keywords
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