Abstract:For determining the pollution status of endocrine disrupting compounds(EDCs) in Songhua River, solid phase extraction (SPE) followed by GC-MS/Yeast Estrogen Screen(YES) assay were used to analyze the EDCs concentration at 11 sampling sites of Songhua River. The results indicated that total five estrogen ∑5ES[JB))] was in the range of 6.59-30.97 ng/L, the average value was 17.23 ng/L, and the water from Dalian river outfall had the highest ∑5ES. Estrogen (E1) and 17β-estradiol (E2), which were mainly from urban sewage and contributed most of all estrogen and their concentrations, were in the range of 1.54-6.34 and 1.86-20.78 ng/L, respectively; Nonylphenol (NP), octylphenol (OP) and bisphenol A (BPA) were detected in all the sampling sites, with the mean values of 512.8,4.1 and 52.8 ng/L, respectively, which were mainly from the domestic sewage and industrial wastewater; The estrogenicity of river water detected by YES was in the range of 0.50-26.16 ng/L, and the highest EEQ occurred at the Haxia sampling site. The EEQ at other sampling site was all below 3.60 ng/L, which was at the same pollution level with other river, but it also existed the potential problems of ecological security in Songhua River.