Abstract
Poly(ethylene terephthalate) (polyester) fibers as solid-phase microextraction (SPME) adsorbent were directly filled in a poly(ether ether ketone) (PEEK) tube, for online analysis of polycyclic aromatic hydrocarbons (PAHs) in environmental water samples, coupled with high-performance liquid chromatography. The facile, economic, and environmental polyester fibers-in-tube SPME device exhibited high extraction efficiency, good selectivity for PAHs, and satisfactory durability. Under optimum conditions, the polyester fibers provided satisfactory enhancement factors in the range of 307–1646, and low detection limits ranging from 0.01 to 0.03 μg L−1. The linearity was in the range of 0.03–80 μg L−1 with correlation coefficients (r) ranging from 0.9978 to 0.9997. Limit of quantification was defined as a concentration of the analytes with a ten-time signal-to-noise ratio (S/N = 10) and was in the range of 0.03–0.1 μg L−1. The intra-day and inter-day precisions for quantitative analysis were investigated and the relative standard deviation (RSD) was lower than 5.8 and 6.9 %, respectively. Extraction repeatability was also investigated and its RSD was in the range of 3.8–7.8 %. Finally, the fiber-in-tube SPME device was successfully applied to analyze PAHs in water samples.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (NSFC, nos. 21205048 and 21405061), the Shandong Provincial Natural Science Foundation of China (no. ZR2014BQ019) and the Graduate Innovation Foundation of University of Jinan (GIFUJN, no. YCXS15007).
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Bu, Y., Feng, J., Sun, M. et al. Facile and efficient poly(ethylene terephthalate) fibers-in-tube for online solid-phase microextraction towards polycyclic aromatic hydrocarbons. Anal Bioanal Chem 408, 4871–4882 (2016). https://doi.org/10.1007/s00216-016-9567-z
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DOI: https://doi.org/10.1007/s00216-016-9567-z