▎ 摘　　要

A hybrid coating material composed of the metal-organic framework-199 and graphene oxide has been synthesized and coated on stainless steel fiber in a simple manner, characterized, and used in a fiber headspace solid-phase microextraction (HS-SPME) method in combination with gas chromatography-flame ionization detection. The synthesized fiber exhibited high sensitivity toward microextraction of polycyclic aromatic hydrocarbons (PAHs). The fibers were characterized using Fourier transform infrared spectrometer, scanning electron microscopy, and X-ray diffraction. Optimization of the microextraction conditions for the HS-SPME method was accomplished using a response surface design of Box-Behnken. Under optimized conditions, good linearity for the analytes was obtained in the range of 0.1-200.0 mu gL(-1), with the limits of detection (S/N = 3) ranging from 0.027 to 0.041 mu gL(-1). The interday and intraday relative standard deviations for various PAHs at three different concentration levels (n = 5) using a single fiber were 1.6%-2.3%. The method was successfully applied for quantification of naphthalene, phenanthrene, anthracene, and chrysene in industrial wastewater and environmental water samples with the recoveries between 93% and 103%.