We can divide into two groups: metals and essential elements from the non-essential table to see whether the concentrations of metals in the snail tissue, both very different. The group is essential element is a metal that is essential for living creatures in the sea. Levels that will result in toxicity so there is much higher than the value from the table so non-essential group elements are clearly two mussels are the most zinc station. Copper is a metal deposition, both of which are in micrograms per gram up to ten levels. While there, cadmium, and lead levels less than 1 mcg per g, which all four have found this metal cadmium toxicity is the most.
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