Activated Carbon Fiber Solid Phase Microextraction-Gas Chromatography for the Determination of Nonylphenol in Seawater

The nonylphenol(NP) in seawater was detected by solid phase microextraction(SPME) coupled to Gas Chromatography(GC) with the activated carbon fiber(ACF) used as extraction fiber.Several parameters affecting the SPME procedure,including the selection of extraction mode,desorption temperature and time,extraction temperature and time,ionic strength and pH were optimized.The parameters affecting the SPME adsorption process were optimized.Under the optimized conditions(extraction temperature was at 70 ℃,salt concentration was 5%,extraction time was for 20 min,pH was 6),the optimized method had an acceptable linearity between 1 μg/L and 100 μg/L,and the limits of the detection was 0.1 μg/L,with R.S.D.values 10% for each compound.In the system of seawater,the recovery of the method is 101.2%,and the method could use in the system of seawater.