Australia is one of the most urbanized western nations in the world with the majority of its population living in close proximity to a few highly urbanized coastal estuaries or embayments including Port Jackson (Sydney), Port Melbourne and Moreton Bay (Brisbane) (Australian Bureau of Statistics, 2010). This raises particular concerns for the potential degradation of these ecosystems and their associated biota. Threats from metal inputs means that a range of effective methods are required to identify, monitor and remediate such contaminants.