Preparation of a fluorinated metal-organic framework and its application for the dispersive solid-phase extraction of
Shi-Yao Ma1, Jun Wang1, Li Fan1
1Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province and Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China.
Abstract:
A fluorinated metal-organic framework material (F-MOF) was successfully prepared using tetrafluoroterephthalic acid (H2tfbdc) as the ligand and Zn(II) as the central metal ion. The F-MOF exhibited excellent adsorption performance for perfluorooctanoic acid (PFOA), with a maximum adsorption capacity of 419.8 mg g-1. A sensitive dispersive solid-phase extraction using the F-MOF as an adsorbent, coupled with GC-MS analysis, was developed for detecting trace PFOA with a limit of detection as low as 2.6 ng L-1. This method was applied to detect PFOA in environmental water samples, yielding satisfactory results.
