Commercial polymeric fiber as sorbent for solid-phase microextraction combined with high-performance liquid chromatography for the determination of polycyclic aromatic hydrocarbons in water

摘要

as sot bent. coupled with highA novel rnicroextraction method making use ofcominercial polymer fibei perfoi inance liquid chromatography-fluorescence detection for the determination ofpolycyclic aromatic hydrocarbons (PAHs) in water has been developed. In this technique, the extiaction device was simply 000 fil f a1 a length (8crn) of a strand of commercial polyiner fiber, Kevlar (each strand consisted o merits, each of diameter ca 9 23 itm), that was allowed to turnble freely in the aqueous sample solution during extraction The extracted analytes were desorbed ultrasonically before the extract was injected into IVLC systern for analysis Extraction parameters such as extraction time. desorption time, type of desorption solvent and sample Volume were optimized Each fiber Could be used for up to 50 extractions and the rnethod showed good precision, reproducibility and linear response within a concentration LgL-1 with correlation coefficients Of Lip to 0 9998 Limits of detection between 0.4 and 05-5 00l ran e 0.. g 4.4 ng L I foi seven PAHs Could be achieved. The relative standard deviations (it = 3) of this technique were between 2.9% and 12 1%. 0 2009 Elsevier B.V. All rights reserved...........