ABSTRACT
In this study, an oxygen self-doped carbon aerogel (ODCA), synthesized via ambient pressure drying and carbonization, was employed as solid-phase microextraction (SPME) coating material for phthalate esters (PAEs) detection in water samples by gas chromatography (GC) coupled with a flame ionization detector (FID). The materials were obtained by incomplete carbonization of the phenolic aerogel at a controlled temperature of 950°C, which leads to a certain amount of oxygen self-doping in the carbon aerogel. The ODCA-coated fiber exhibited fascinating extraction properties for PAEs mainly due to its oxygen active sites, π-π interaction, high surface area, and porosity of carbon aerogel. This as-proposed fiber showed wide linearity ranges (0.5–500, 1.0–500, 1.0–1000, 2.0–500 μg L−1, respectively), and provided low limits of detection (LOD, 0.17–0.83 μg L−1) for PAEs analysis under the optimal conditions. The single fiber and fiber-to-fiber relative standard deviations at 100 μg L−1 were observed in the range of 5.31%–10.37% and 9.17%–16.65%, respectively. Moreover, this method was also used for the determination of five PAEs in real water samples.
Acknowledgements
The Anhui Provincial Natural Science Foundation (No. 1908085 MB 52) supported this work
Disclosure statement
No potential conflict of interest was reported by the author(s).
Supplementary material
Supplemental data for this article can be accessed on the publisher’s website