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A mollusc sample (seashells) has been given to you for cadmium analysis. If the allowed concentration of cadmium in seashells is 1.0 ng/kg, briefly explain

A mollusc sample (seashells) has been given to you for cadmium analysis. If the allowed concentration of cadmium in seashells is 1.0 ng/kg, briefly explain your sample preparation method and the instrument of your choice.

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