颗粒有机质（POM）对疏水性有机污染物（HOCs）在湖泊颗粒/水分布的影响机理研究

Particulate Organic Matter (POM) is an important factor in determining the distribution, migration, and transformation of Hydrophobic Organic Contaminants (HOCs). In this study, Lake Taihu will be taken as the research area, Polycyclic Aromatic Hydrocarbons (PAHs) and Polybrominated diphenyl ethers (PBDEs) will be taken as target chemicals. Organic pollutants particles/water partition in different seasons and water depth will be studied, the influence mechanism of particle size on the distribution and partition will be elucidated. GC-MS, IMS, IRMS will be used to study the composition and source of organic matter, reveal the relationship between POM and pollutant distribution and partition and investigate influence of organic matter on HOCs in the lake particle/water content, partition and exchange flux. The project aims to enrich the knowledge on relationship between POM and HOCs as well as provide a scientific basis for organic pollution control in the lake ecosystem.

颗粒有机质是影响疏水性有机污染物在水环境中分布和迁移转化规律的重要因素。项目拟以太湖为研究对象，以多环芳烃和多溴联苯醚为目标污染物，揭示不同季节和不同水深条件下有机污染物在悬浮颗粒物和水体中的分配规律，阐述粒度对颗粒物分布和分配的影响机理。利用气相色谱-质谱仪、同位素质谱仪、同位素比值质谱仪等现代有机地球化学手段，研究有机质组成和来源，揭示有机质与疏水性有机污染物分布和分配之间的关系，阐述有机质对有机污染物在湖泊颗粒/水含量、分配和通量等的影响。成果旨在弥补学术界对于湖泊水生态系统颗粒物中有机质与有机污染物研究方面的不足，为湖泊有机污染物风险评估、归趋和污染控制提供理论依据。

有机质是影响疏水性有机污染物在水环境中分布和迁移转化规律的重要因素。项目以巢湖为研究对象，以多环芳烃和正构烷烃目标污染物。利用气相色谱-质谱仪、同位素质谱仪、三维荧光光谱等现代有机地球化学手段，研究有机质组成和来源，揭示有机质与疏水性有机污染物分布和分配之间的关系，阐述有机质对有机污染物在湖泊分布和分配的影响。成果旨在弥补学术界对于湖泊水生态系统颗粒物中有机质与有机污染物研究方面的不足，为湖泊有机污染物控制提供理论依据。