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The maximum tetracycline photodegradation yield was 89.97% obtained by La2O3/brass foil with the dimensions of 1 cm × 3 cm, 100 mL of tetracycline solution with the concentration of 5 mg/L and pH of 10 under ultraviolet irradiation for 120 min.The general toxicity assays for evaluating the risk of aquatic environment were commonly based on single-species test organism models. Thus, the lack and conflict of the different responses among species had hindered researchers to assess the real toxicity of a target toxicant. Therefore, the difference between the te