Understanding the effects of water chemistry on the toxicity of copper in an estuarine clam Potamocorbula laevis using the toxicokinetic-toxicodynamic model

Abstract

河口水化学条件复杂多变，其中盐度和溶解性有机质是影响重金属毒性的关键因素。盐度和溶解性有机质不仅会影响重金属的生物有效性和生物累积，还会影响生物的生理，改变生物对重金属的内在敏感度。本论文选用光滑河蓝蛤为作为模式生物，以毒代动力学-毒效动力学模型为框架，结合稳定同位素示踪实验和毒性测试，研究河口水化学条对铜（Cu）生物累积和毒性的影响，获得研究结果如下： （1）盐度对光滑河蓝蛤Cu生物累积和毒性的影响：当Cu浓度较低时（6-9μg/L），在5-30盐度范围内，Cu的吸收速率常数[L/(g∙h)]随盐度上升而显著降低，且可用经验方程“吸收速率常数=1/(1.35+0.116&#87...Water chemistry of estuarine ecosystems is complex and dynamic. Among the many factors that affecting the toxicity of metals, salinity and dissolved organic matter (DOM) are the two key factors. Salinity and DOM not only affect the bioavailability and bioaccumulation of metals, but also affect the physiology and intrinsic sensitivity of aquatic organisms. In the study, we investigated the effects ...学位：理学硕士院系专业：环境与生态学院_环境科学学号：3312014115168