title: Facile and efficient poly(ethylene terephthalate) fibers-in-tube for online solid-phase microextraction towards polycyclic aromatic hydrocarbons.
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. Graphical abstract Schematic diagrams of polyester fibers-in-tube device and the automated in-tube SPME-HPLC system.
authors.affiliation: Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Shandong, 250022, China.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Bu
authors.affiliation: Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Shandong, 250022, China.
authors.forename: Juanjuan
authors.initials: J
authors.lastname: Feng
authors.affiliation: Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Shandong, 250022, China. chm_sunm@ujn.edu.cn.
authors.forename: Min
authors.initials: M
authors.lastname: Sun
authors.affiliation: Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Shandong, 250022, China.
authors.forename: Changli
authors.initials: C
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Shandong, 250022, China. chm_luocn@ujn.edu.cn.
authors.forename: Chuannan
authors.initials: C
authors.lastname: Luo
keywords: Fibers-in-tube; Online analysis; Poly(ethylene terephthalate); Polycyclic aromatic hydrocarbons; Solid-phase microextraction