Triazine‐based organic polymers@SiO₂ nanospheres for sensitive solid‐phase microextraction of polycyclic aromatic hydrocarbons

Abstract

Triazine-based organic polymers@SiO 2 nanospheres were prepared and applied as an extraction coating onto stainless steel wires and the wires were filled into polyetheretherketone tube for in-tube solid-phase microextraction. Taking polycyclic aromatic hydrocarbons as targets, main factors affecting extraction performance of the tube were investigated through coupling to high performance liquid chromatography. Under the optimum conditions, an online analytical method for polycyclic aromatic hydrocarbons was established with large linear ranges (0.010-20 µg/L), low limits of detection (0.003-0.010 µg/L), high enrichment factors (533-2954), and good repeatability (relative standard deviations <1.7% for intraday test, <5.0% for interday test). The analysis method was successfully applied to the detection of trace targets in real water samples and the relative recoveries ranged from 82.9 to 119.9%, which demonstrated the applicability of extraction tube in sample preparation. K E Y W O R D Shigh performance liquid chromatography, online analysis, polycyclic aromatic hydrocarbon, solid-phase microextraction, triazine-based organic polymers 622

Highly efficient solid‐phase microextraction of polycyclic aromatic hydrocarbons in water based on worm‐like nickel‐titanium oxide nanocomposites coating grown on a nickel‐titanium alloy wire by low‐voltage anodization

“…In this study, several parameters of the developed method with the NiTiONCs@NiTi fiber were compared with those of some reported methods [23–33]. As shown in Supporting Information Table S2, the overall enrichment capability of the developed SPME–HPLC–UV method with the NiTiONCs@NiTi fiber is greater than that of some reported methods [24–26] or even comparable to that of the reported in‐tube SPME–HPLC–DAD method [28,32] and SPME–GC–FID method [28,32].…”

“…As shown in Supporting Information Table S2, the overall enrichment capability of the developed SPME-HPLC-UV method with the NiTiONCs@NiTi fiber is greater than that of some reported methods [24][25][26] or even comparable to that of the reported in-tube SPME-HPLC-DAD method [28,32] and SPME-GC-FID method [28,32]. This method also has wider linear ranges than those of the previously reported ones [23,[27][28][29]31,33], lower LOD values than those of the previously reported ones [23,32] or comparable LOD value [28] and better or comparable recoveries. Moreover, the proposed SPME procedure is also environmentallyfriendly.…”

Silica Aerogel Hybridized with Melamine-Terephthalaldehyde Polymer for In-Tube Solid-Phase Microextraction of Polycyclic Aromatic Hydrocarbons from Environment Water

“…Solid-phase microextraction (SPME), as a simple and efficient method, has been widely used in recent years [ 1 ]. Compared with liquid-phase extraction, solid-phase extraction and other traditional advantages [ 2 ], in-tube SPME is performed with no organic solvent and less sample, and it can further be combined with high-performance liquid chromatography (HPLC) for online analysis and better accuracy [ 3 , 4 ]. The selection of extraction materials is particularly important for SPME [ 5 , 6 ].…”

Preparation of hydrophilic molecularly imprinted solid‐phase microextraction fiber for the selective removal and extraction of trace tetracyclines residues in animal derived foods

“…SPME, an alternative to conventional sample preparation techniques introduced by Pawliszyn in the early 1990s [13], has been widely used in the analysis of trace organic contaminants [14–16], which is based on the adsorption and desorption of the analytes on the polymeric coating (known as extraction phase), to achieve the separation and enrichment in one step with solvent‐free, simple operation, and is convenient to couple with other instruments [17]. However, the commercially available SPME fibers are usually mechanically fragile, expensive, and having low extraction efficiency and poor selectivity in the extraction process [18].…”