Abstract
A gold nanoparticles modified fused silica fiber was developed and used for the head space solid phase micro-extraction (HS-SPME) of polycyclic aromatic hydrocarbons (PAHs), including naphthalene, anthracene, acenaphthylene, phenanthrene, fluoranthene and pyrene. The effects of different parameters influencing the extraction efficiency including extraction temperature, extraction time, ionic strength, stirring rate and sample volume were examined and optimized. Linear ranges of 1-300μgL(-1) for naphthalene, 0.5-250μgL(-1) for anthracene, acenaphthylene and phenanthrene and 0.05-200μgL(-1) for fluoranthene and pyrene were obtained. Detection limits were in the range of 10-200μgL(-1). Single fiber repeatability and fiber to fiber reproducibility were less than 2.5%-6.0% and 8.5%-13.6%, respectively. Seawater samples were analyzed as real samples and good recoveries (91.9%-105.3%) were obtained for target analytes.
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