In the l7 priority researches of the food contaminants ,which are identified by the world health organization, cadmium locats in third. And Patinopecten yessoens ,which belongs to bottom habitat, is much easier to accumulate cadmium. Cadmium can cause certain harm on human body health through the food chain, also can cause harm on marine creatures. It’s toxicity mainly manifests in combineding with biological component to constitut metal complex or metal chelates, leading to many enzymes deactivation, makin...