| Popis: |
This study investigated the distribution of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) in Fenhe River. A solid phase extraction (SPE) pretreatment method was used together with liquid chromatography tandem mass spectrometry (LC-MS/MS) to analyze the concentrations of PFOS and PFOA in Fenhe River, which were found to be in the ranges of 3.54-16.23 ng x L(-1) and 2.49-4.79 ng x L(-1) in the water phase, and in the ranges of 7.77-51.22 ng x g(-1) and 1.94-3.54 ng x g(-1) in the sediment, respectively. In water samples, the PFOS levels showed an increasing trend from the upstream to the downstream of the river, while the PFOA levels were similar among all the samples. In sediment samples, the increasing tendency of PFOS concentrations was not as obvious as in water samples, and the PFOA levels were again similar. Besides, the partitioning of PFOS between the water phase and the sediment was related to the content of organic carbon in the sediment. However, there was no significant correlation between PFOA partitioning and the organic carbon content. |
