Abstract:
Residual pattern of highly toxic dioxins, included with polychlorinated
dibenzo -p-dioxins, dibenzofurans and coplanar PCBs, were determined in
biota from two locations in western costal area of Sri Lanka. The
concentrations of PCDDs and PCDFs in samples were ranged from 0.04 to
4.5 and 0.04 to 1.3 pg/g wet wt. The non-ortho and mono-ortho coplanar
PCBs concentrations were ranged 1.3 to 140 and 49 to 6000 pg/g wet wt,
respectively. The observed dioxin levels in these samples were less than
those are from the industrialized countries whereas within the range of most
of other Asian countries. Kelani River fish accumulated 1 to 2 orders of
magnitude high dioxin concentrations than fish from the Negombo Lagoon.
