ZeoliteImidazole Framework nanostructured materials as a new fiber coating for solid-phase microextraction methods

Zeolite imidazole framework nanostructured materials was prepared and used as a highly porous fibercoating material for solid-phase microextraction (SPME). The prepared nanomaterial was immobilized onto a stainlesssteelwire for fabrication of the SPME fiber. The fiber was evaluated for the extraction of some polycyclic aromatichydrocarbons (PAHs) from aqueous sample solutions in combination with gas chromatography–mass spectrometry(GC–MS). A one at-the-time optimization strategy was applied for optimizing the important extraction parameters suchas extraction temperature, extraction time, ionic strength, stirring rate, and desorption temperature and time. Inoptimum conditions, the repeatability for one fiber (n=3), expressed as relative standard deviation (R.S.D.%), wasbetween 4.2% and 9.2% for the test compounds. The detection limits for the studied compounds were between6 and9pg mL−1.

کلیدواژه ها:

Nanostructure ، zeolite ، imidazole ، Microextraction ، framework