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. 2022 Apr 6;27(7):2353. doi: 10.3390/molecules27072353

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Chromatograms of the target compounds using four kinds of fibers with different surface wettabilities (Left) and the comparative peak area for each target compound using 4 kinds of wires for in-tube SPME (Right). Symbol identification: (a) pristine wire, (b) superhydrophilic wire, (c) superhydrophobic wire, (d) superhydrophilic wire after UV irradiation. Conditions: sampling volume, 60 mL; sampling rate, 2.00 mL/min; desorption time, 2.0 min. Peak identification: (1) bisphenol A, (2) estradiol, (3) ethynylestradiol, (4) estrone, (5) diethylstilbestrol, and (6) hexestrol. Mobile phase: Water/acetonitrile (53:47, v/v); Detection wavelength, 220 nm, room temperature.