Determination of Phthalate Esers in Water by Homemade Solid-Phase Microextraction Coating

An ionic liquid bonding solid-phase microextraction coating was prepared by sol-gel,that was used to determine phthalate esers(PAEs) in water with headspace solid-phase microextraction and gas chromatography(HS-SPME-GC).The experimental conditions were optimized.The detection limits were in the range of 0.0005—0.0500μg/L,and linear range was 0.01—100μg/L.The contents of PAEs in east lake water,tap water and bottled water were determined,and the contents of dibutyl phthalate was 1.10—3.10μg/L,and the other three kinds were not detected.The recovery of east lake water was 81.0%—98.6% with the relative standard deviations(RSD) of 3.2%—9.2%.