Dear all,
CEJ has join another project with the International community to test Mercury(Hg) levels in fish as a pilot project. As you may aware UNEP is working for a Mercury Treaty since 2010 and its 4th meeting will be held in Uruguay in June 2012. We are not sure who will represent Sri Lanka. A regional meeting will take place in Kuala Lumpur, Malaysia, from 15 to 17 May 2012. But we learned this very late and they do not have funds for supporting CSOs.
Under the project we will choose 1-2 water bodies to test Hg levels in Fish.
The recorded level of
mercury in the Negombo lagoon in 1996 was <0.02ppm (Silva, 1996). However this is
higher than 0.01ppm, the tolerance limit for mercury given by the Central
Environmental Authority for discharges in to marine coastal waters or
0.0005ppm, the permissible level for industrial waste discharges in to inland
surface waters (National Environmental Regulation, 2008).
A high amount of
mercury had been recorded in a study on coastal sediments from Mannar. The
level of mercury in marshland peaty sediments was indicated as 95ppm while that
of sediments from tidal flats of Mannar was 8ppm. It also report in intertidal
sediments mercury can exist bound to grain coatings of Fe-Mn-oxides, hydrates
and to undecomposed organic matter (Senrathne
& Dissanayaka, 1988).
It is clear that
mercury can enter the food chain through soil consuming organisms that end up
in edible fish and other animals that consumed by human.