•Oil
tanker spills and outflow pipes are the main sources of PAH’s for the
marine environment.
•Land
runoff is a big source of organochlorines, heavy metals and some PAH’s.
These substances
generally
come from the run-off of agricultural and industrial land.
•Destructive
fishing practices are the main source of cyanide in the marine
environment. The cyanide
comes
from cyanide fishing which is practised in most Indoneasian countries.
There is also a problem
with
heavy metal pollution because of the lead based anti-fouling paint used on
the hull's of the boats.
Transport of Marine Pollutants
•Pollutants
are generally transported into the marine environment through sediments.
•The
particles of the pollutant adsorb
to the sediment particles.
•They
can be transported great distances in small amounts of time.
•Estimates
suggest that fine particles move 0.4 km per day, coarse particles at 0.4 km
per day (Abelson et al, 1999).
