PAHs are hazardous and ubiquitous pollutants in the aquatic environment. Understanding their flux, diffusion and environmental risk is very important for the sustainable development of drinking water sources. Thus, PAHs residues were measured with isotope dilution mass spectrometry in sediments, and overlying water of different types of drinking water sources such as rivers, lake, and river networks of Yangtze River Delta. These water bodies are important sources of drinking water, fish, and ecological habitats of various species. The results showed that the ΣPAHs were ranged from 4.25 to 407 ng/L in water, ranked in order as follows: rivers > river networks > lake. ΣPAH_s were ranged from 149 to 8023 ng/g dry weight in sediment, ranked in order as follows: river networks > lake > rivers. Low molecular weight PAHs were dominant compounds in water, while high molecular weight PAHs were dominant compounds in sediment. The ff_SW values revealed a net resuspension of naphthalene (Nap), acenaphthylene (Dih), fluorine (Flu), phenanthrene (Phe), anthracene (Ant), and benzo[a]pyrene (BaP) from sediment to water in all kind of water sources; indeno[1,2,3-c,d]pyrene (Ind), benzo[b]fluoranthene (BbF), and benzo[k]fluoranthene (BkF) were transferred from water to sediment in Qiantang river but these compounds were at sediment-water equilibrium in Yangtze River, Huangpu River, Jiaxing River Network and Taihu Lake. Acenaphthene (Ace), fluoranthene(Fla), benzo[a]anthracene (BaA), chrysene (Chr), benzo[g,h,i]anthrancene (BPY) were at sediment-water equilibrium at Qiangtang River. PAHs were mainly derived from a mixed source of combustion and petroleum through source resolution. According to quality guidelines, PAHs in sediment posed a potential ecological threat at one site, however, drinking water did not pose any carcinogenic and non-carcinogenic risks.

多环芳烃是水生环境中的有害和普遍存在的污染物。了解它们的通量，扩散和环境风险对于饮用水源的可持续发展非常重要。因此，利用同位素稀释质谱法测量了沉积物以及长江，三角洲的河流，湖泊和河网等不同类型饮用水源上覆水中的PAHs残留量。这些水体是饮用水，鱼类和各种物种生态栖息地的重要来源。结果表明，水中的ΣPAHs浓度范围为4.25〜407 ng / L，依次为：河流>河网>湖泊。ΣPAH_秒沉积物的干重范围为149至8023 ng / g，按以下顺序排序：河网>湖泊>河流。低分子量PAHs是水中的主要化合物，而高分子量PAHs是沉积物中的主要化合物。该FF _SW值显示了各种水源中萘（Nap），（Dih），氟（Flu），菲（Phe），蒽（Ant）和苯并[a] py（BaP）的净重悬浮。 ; 茚并[1,2,3-c，d] py（Ind），苯并[b]荧蒽（BbF）和苯并[k]荧蒽（BkF）从水中转移到钱塘江的沉积物中，但这些化合物在沉积物中长江，黄浦江，嘉兴河网和太湖的水平衡。Qian塘河的沉积物-水平衡状态为（Ace），荧蒽（Fla），苯并[a]蒽（BaA），A（Chr），苯并[g，h，i]蒽（BPY）。通过源分解，PAHs主要来自混合燃烧源和石油。根据质量指南，沉积物中的多环芳烃在一个地点构成了潜在的生态威胁，但是，