Accumulation Of Heavy Metals In Fish And Beach Culture Environment Evaluation

By laboratory simulation, experimentation in small fishpond ecosystem and and environmental assessment of large scale producing base of beach using the result of monitoring, we revealed the dynamic law of accumulation of heavy metal in fish Carassius auratus gibelio exposed to single metal under several kinds of concentrations, and the effect of the interaction of metal mixture on accumulation of heavy metal in the tissues of Carassius auratus gibelio, and the character and the relationship of heavy metals in motion, transformation and accumulation among the fishpond ecosystem made up of water, sediment, algae and the fish (Carassius auratus gibelio and Hypophthalmichthys molitrix). We also did the environmental regulation assessment on the base of breeding aquatics of Haibei in Dafeng to provide the theory of no pollution production for the coastal beach of Jiangsu province.The results demonstrated that the accumulation of copper, lead and cadmium in fish tissues increased with the increase of metal concentration and increased with the time prolongation and then it reached to a balanceable level in a certain time; the accumulation ability of different organ was in this order: purtenance>gill>muscle. The interaction of metal mixture could affect the accumulation in the purtenance and gill, but could not affect the accumulation in the muscle. In the fishpond ecosystem composed of sediment, water, algae and fish, heavy metals could form its motion and transformation by a complicated course such as aggradation, release, accumulation and excretion. Water and sediment of Haibei aquiculture base of Jiangsu beach technical limited company can meet with the standard of the water and sediment for breeding no environmental pollution aquatic production, and the concentration of toxic and harmful matter in Carassius auratus gibelio can meet with the safety requirement of no environmental aquatic production.