摘要
合成了全氟癸基功能化磁性介孔氧化硅微球(F_(17)-Fe_3O_4@mSiO_2),材料具有很好的水溶液分散性,能选择性富集全氟化合物,易分离、可重复使用等特点。以其为固相萃取材料、结合GC-M S方法建立了检测水中全氟羧酸的新方法。考察了磁性F_(17)-Fe_3O_4@m SiO_2用量、洗脱剂的类型和体积、萃取和洗脱的时间等参数的影响。在优化的实验条件下,方法的检出限为0.045~0.078μg/L,线性范围0.2~2000μg/L,相关系数大于0.998,相对标准偏差3.7%~7.2%。将方法应用于环境水中5种全氟羧酸的分析,回收率在95.6%~108.1%之间。
The interior-walls decyl-perfluorinated functionalized magnetic mesoporous microspheres（ F17-Fe3O4@ m Si O2） were synthesized and applied as an effective adsorbent for the preconcentration of perfluorinated carboxylic acids in water samples prior to GC-MS. The F17-Fe3O4@ m Si O2 has several advantages such as good hydrophilicity,high-selective preconcentrationof PFCs,fast separation ability and reused. Various parameters,including the amounts of F17-Fe3O4@ m Si O2,eluting solvent and volume,extraction time and elution time were optimized. Under optimum conditions,the limits of detection were 0. 045-0. 078 μg/L,and the linear relationship was obtained in the range of 0. 2-2000 μg/L of the perfluorinated carboxylic acidswiththe correlation coefficient ≥ 0. 998. The relative standard deviations were between 3. 7% and 7. 2%. This method has been applied for the determination of trace perfluorinated carboxylic acids in real water samples with satisfactory results.The recoveries fell in the range from 95. 6%-108. 1%.
出处
《分析试验室》
CAS
CSCD
北大核心
2017年第8期948-951,共4页
Chinese Journal of Analysis Laboratory
基金
江西省自然科学基金项目(20142BAB203012)资助
关键词
全氟癸基功能化磁性介孔氧化硅
磁固相萃取
全氟羧酸
气相色谱-质谱
Interior-walls decyl-perfluorinated functionalized magnetic mesoporous microspheres
Magnetic solid phase extraction
Perfluorinated carboxylic acids
Gas chromatography-mass spectrometry
