Metals

Measuring bioaccummulation of heavy metals in mobile and sessile fauna present at locations suspected to be disturbed or exhibiting some degree of anthropogenic impact constitutes an essential component of baseline surveys. Trace metals comprise robust indicators of environmental impact and, as such, are required to be monitored before, during and after completion of projects involving aquatic habitats. Marscco's services include the removal of soft tissue samples from shellfish (viscera) and fishes (liver and muscle) to measure total concentrations (mg kg-1) of selected metals, concurrent with the collection of local seabed substrate.

Common metals analysed for baseline studies comprise arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), molybdenum (Mo), nickel (Ni), lead (Pb), selenium (Se), silver (Ag) and zinc (Zn). Samples are analysed by specialized Australian laboratories using the highly sensitive Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES; method 04-008).