Ionic liquid loaded hollow fiber membrane as a solid-phase microextraction fiber; application in determination of aromatic hydrocarbons in water samples

Naser Samadi, Nasim Mohammadne

Abstract

Environmental monitoring of benzene, toluene, ethyl benzene and xylenes (BTEX) in river and well water samples were performed by solid-phase microextraction (SPME) coupled with capillary gas chromatography. For this purpose a novel SPME fiber was prepared based on imidazolium ionic liquids loaded on hollow fiber membrane pores using sol-gel formulation. Copper wire was used as mechanically durable support. Analytical merits of the method, including high correlation coefficients (0.9922-0.9943) and low detection limits (0.04-0.15 μg L-1), made the proposed method suitable for the trace determination of BTEX.