高效液相色谱串联质谱法测定某市污水处理厂进出水中的全氟化合物

Research onPerfluorinated Compounds in and of Wastewater Treatment Plants HPLC-MS/MS

通过建立直接进样-高效液相色谱串联质谱(HPLC-MS/MS)测定污水处理厂进出水中的10种全氟化合物的方法,了解污水厂进出水中全氟化合物污染情况。10种目标分析物在10~500 ng/L范围内具有良好的线性关系,方法检出限为2.3~8.3 ng/L,精密度为2.1%~7.1%,加标回收率为60.6%~91.7%。应用该方法测定某市典型污水厂进出水中的全氟化合物,进水中全氟化合物质量浓度为90.9~206 ng/L,主要污染物是PFOA、PFHxS和PFBS;出水中全氟化合物的质量浓度为67.4~158 ng/L,环境排放量为6.7~22.9 g/d,主要污染物是PFOA和PFHxS。结果表明,该方法能很好地适用于复杂基质中10种全氟化合物的检测。

A method for analysis of 10 perfluorinated compounds(PFCs)from wastewater treatment plants(WWTPs)was established using liquid chromatography-tandem mass spectrometry(LC-MS/MS).good linear relationship in the range from 10 to 500 ng/L.The detection limits were 2.3 to 8.3 ng/L and the precision was 2.1%to 7.1%.The recoveries 10 PFCs in wastewater ranged from 60.6%to 91.7%.The results showed that PFOA,PFHxS and PFBS were main pollutants in influents ranging from 90.9 to 206 ng/L.PFOA and PFHxS had been mainly detected in effluents ranging from 67.4 to 158 ng/L.The daily es of PFCs at six WWTPS were 6.7 to 22.9 g/d.The method was suitable for the detection of PFCs residues in wastewater from WWTPs.