【摘要】 饮用水中普遍检出全氟化合物(PFASs)。该研究以4种典型的PFASs,即全氟丁基羧酸(PFBA)、全氟己基磺酸(PFHxS)、全氟辛基羧酸(PFOA)及全氟辛基磺酸(PFOS)为目标物质，以活性炭滤芯及反渗透(RO)膜滤芯两种常用家庭净水部件为研究对象，测试两种净水材料对PFASs自来水加标水样的去除性能及过滤前后相关水质参数。结果表明，对于活性炭滤芯，PFHxS、PFOA、PFOS在7倍额定总净水量内去除率为72%～86%,PFBA去除率相对较低，且通水量超过2倍额定总净水量后，去除率呈明显下降趋势；PFASs的去除率与高锰酸盐指数、溶解性总固体、无机阴离子等水质参数不相关；对于RO膜滤芯，PFASs的去除率可达90%～100%,PFBA去除率在通水后期呈现缓慢下降趋势；PFHxS、PFOA及PFOS的去除率与溶解性总固体、氯化物、硫酸盐等无机阴离子浓度呈较好的相关性。因此，家用活性炭滤芯、RO膜滤芯对饮用水中的PFASs具有良好的去除效果。研究可为家庭净水装置去除PFASs提供使用参考。更多还原

【Abstract】 Poly-and perfluoroalkyl substances(PFASs) are widely detected in drinking water. In this study, four typical PFASs, perfluorobutanoic acid(PFBA), perfluorohexane sulfonic acid(PFHxS), perfluorooctanoic acid(PFOA), and perfluorooctane sulfonic acid(PFOS) were used as target compounds, and two commonly used household water purification components, activated carbon filter and reverse osmosis(RO) filter, were investigated on the PFASs removal efficiencies with tap water spiked samples. Water quality parameters before and after treatment were analyzed meanwhile. Results showed that for the activated carbon filter, the removal efficiencies of PFHxS, PFOA, and PFOS were 72%～86% within 7 times of the rated treated water volume, while the removal efficiency of PFBA was relatively lower, and showed an obvious decline trend after two times of the rated treated water volume. PFASs removal efficiencies showed no obvious correlation with permanganate index, total dissolved solids, and inorganic anions. For the RO membrane, PFASs removal efficiencies could achieve as high as 90%～100%, with PFBA removal efficiencies showing a slow decline trend in the late stage of water treatment. A good correlation was found between the removal efficiencies of PFHxS, PFOA, and PFOS and the concentrations of total dissolved solids, chloride, and sulfate during the experiment. Therefore, household activated carbon filters and RO membranes had a good removal effect on PFASs in drinking water. This study can provide a reference for removing PFASs in household point-of-use water purifiers.更多还原