Abstract
Measuring the impact of PAHs in seawater samples is often difficult due to the low concentrations in which they appear and the complexity of the sample matrix. In this work, a micelle supported Fe3O4 magnetic nanoparticles decorated hydroxylated multi-walled carbon nanotubes material was synthesised. The material was facilely synthesised between Fe2+ and carbon nanotubes. The synthesised nanomaterial served as an excellent support for micelles, exhibiting high loading capacity and selectivity. The prepared material used in dispersive solid-phase extraction (DSPE) for investigation of polycyclic aromatic hydrocarbons (PAHs) from seawater for the first time. The application showed good response (R2 > 0.9981) in the range of 0.02-1.0 μg/L with high precision. Limits of detection of 16 PAHs ranged from 0.009 to 0.018 μg/L (S/N = 3). The spiked recovery of proposed method (72.65%-96.54%) was 1.01-2.32 times higher than that of the conventional method, and the corresponding relative standard deviation (RSD) was in the range of 4.23%-9.96%. The enrichment factors reached to 39.65-121.32 that exhibited good enrichment ability.
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