Abstract：
Pharmaceuticals and personal care products (PPCPs) are emerging contaminants that have raised urgent environmental issues. The dissolved organic matter (DOM) plays a pivotal role on PPCPs\' migration and transformation. To obtain a comprehensive understanding of the occurrence and distribution of PPCPs, a seasonal sampling focused on the riverine system in coastal zone, Tianjin, Bohai Rim was conducted. The distribution and transformation of thirty-three PPCPs and their interaction with DOM were investigated, and their sources and ecological risks were further evaluated. The total concentration of PPCPs ranges from 0.01 to 197.20 μg/L, and such value is affected by regional temperature, DOM and land use types. PPCPs migration at soil-water interface is controlled by temperature, sunlight, water flow and DOM. PPCPs have a high affinity to the protein-like DOM, while the humus-like DOM plays a negative influence and facilitates PPCPs\' degradation. It is also found that protein-like DOM can represent point source pollution, while humus-like substances indicate non-point source (NPS) emission. Specific PPCPs can be used as markers to trace the source of domestic discharge. Additionally, daily use PPCPs such as ketoprofen, caffeine and iopromide are estimated to be the main risk substances, and their ecological risk varies on space, season and river hydraulic condition.
摘要：
药品和个人护理产品（PPCPs）是新兴的污染物，已经引起了紧迫的环境问题。溶解性有机质（DOM）在PPCPs的迁移和转化中起着关键作用。为了全面了解PPCPs的发生和分布，针对沿海地区河流系统的季节性采样，天津,环渤海进行。研究了33个PPCPs的分布和转化及其与DOM的相互作用，并对其来源和生态风险进行了进一步评价。PPCPs的总浓度范围为0.01至197.20μg/L，这个值受到区域温度的影响，DOM和土地利用类型。PPCPs在土水界面的迁移受温度控制，阳光,水流和DOM。PPCPs对类似蛋白质的DOM有很高的亲和力，而类似腐殖质的DOM起着负面影响，并促进了PPCP的退化。还发现类蛋白质DOM可以代表点源污染，而腐殖质样物质表示非点源(NPS)发射。特定的PPCP可用作标记以追踪家庭放电的来源。此外,日常使用PPCP，如酮洛芬，咖啡因和碘普罗胺估计是主要的危险物质，它们的生态风险因太空而异，季节和河流水力状况。
