间苯二酚双(二苯基磷酸酯)(RDP)是溴代阻燃剂(BFRs)最适合的替代品之一，磷酸三苯酯(TPHP)是RDP产品的主要副产物。随着BFRs逐渐被禁用，RDP及其副产物将被大量生产和使用，从而被引入环境，造成环境问题。因此，我们选择RDP和TPHP为研究目标。. 目前关于RDP和TPHP水环境行为的研究很少。本项目将对二者在水环境多界面中的分布进行调查，为评价其生态风险提供数据支持。另外还将针对RDP和TPHP在沉积物中的吸附解吸机制展开研究。除了考察环境因素的影响之外，运用分形分维理论对吸附模型进行校正，以更真实的反映微界面吸附过程，结合二者在不同粒径沉积物上的分配特征，揭示沉积物粒径对界面行为的影响。同时结合吸附解吸实验结果和各种表征技术，揭示腐殖质对沉积物吸附目标物的影响机制，为揭示RDP和TPHP的水-沉积物界面行为，预测二者迁移转化规律、制定合理的监管政策提供帮助。

Resorcinol bis(diphenylphosphate)(RDP) is a halogen-free organophosphorus flame retardant (OPFRs) that are considered to be suitable replacements for the banned brominated flame retardants (BFRs). After the phase-out of some BFRs, RDP have been increasingly used to comply with flammability standards in consumer products. The environmental problem caused by RDP should be paid more attentions. Triphenyl phosphate (TPHP) is a major by-product in RDP productions. TPHP as well as RDP have high aquatic toxicity. The existing of TPHP could not be neglect when we study the environmental behaviors of RDP. Therefore, we selected RDP and TPHP as objectives.. The presence of RDP and TPHP in environmental samples or in products has been scarcely reported. Since no enough data could be found in the literature on environmental levels of RDP and TPHP, it is impossible to calculate their environmental risk. So this study investigate the distribution of RDP and TPHP in water environment to provides data support for further study on their environmental risk.. The water-sediment interfacial behavior of organic compounds is very important to predict the migration and transformation of them and formulate reasonable regulatory program. Therefore, we will study the adsorption and desorption mechanism of RDP and TPHP to reveal their water-sediment interfacial behavior. Besides the influence mechanism of environmental factors, we will deduce the expression of surface fractal dimension (SFD) for size fractions of the sediment. Based on the expression, the SFD value of different size fractions of the sediment will be calculated. Combine these with the distribution characteristics of RDP and TPHP in different size fractions of the sediment，we will conclude the influence mechanism of particle size on adsorption and desorption. Meanwhile, the adsorption and desorption of RDP and TPHP on different humus and humus-sediment complexes will be investigated. Characterization of the humus-sediment complexes and suspensions will be conducted by utilizing multiple analytical techniques to reveal the influence of humus on the adsorption and desorption mechanism of RDP and TPHP. This study contributes to predict the migration and transformation of RDP and TPHP. It is very helpful to evaluate the environmental risk and formulate a reasonable regulatory program of RDP and TPHP.