Citation: MA Mingguang, WEI Yunxia, LIU Haixia, LIU Fang, SHANG Qiong. Fabrication and application of polyaniline/titanium dioxide nanotube solid phase microextraction fiber[J]. Chinese Journal of Chromatography, ;2020, 38(6): 639-646. doi: 10.3724/SP.J.1123.2019.10012 shu

Fabrication and application of polyaniline/titanium dioxide nanotube solid phase microextraction fiber

College of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou 730070, China

Corresponding author: WEI Yunxia, weiyx07@lzu.edu.cn
Received Date: 12 October 2019

Fund Project: Science and Technology Program of Gansu Province (No. 18JR3RA219)

A novel solid phase microextraction fiber of polyaniline coated titania composite nanotube (PANI@TiO₂NTs/Ti) array was fabricated on a titanium wire by in situ oxidation. The effects of the inorganic acid medium, aniline concentration, and oxidation voltage on the electropolymerization of aniline were discussed. The best forming conditions for the composite fiber obtained by analyzing the surface morphology and composition of the fibers were as follows:electrolyte composing, 0.5 mol/L aniline-1 mol/L H₂SO₄; electropolymerization, 10 V for 60 min. The developed fibers were used in conjunction with high performance liquid chromatography for the extraction and determination of ultraviolet filters in samples, and the extraction conditions optimized were as follows:extraction time 40 min, desorption time 4 min, extraction temperature 40℃, stirring rate 600 r/min. The average recoveries of the target analytes spiked in real samples ranged from 78.2% to 118%, and the relative standard deviations ranged from 4.4% to 8.9%. The developed method is simple, rapid, and accurate, and it is suitable for the sensitive determination of UV filters in environmental water samples.
- solid phase microextraction (SPME),
- high performance liquid chromatography (HPLC),
- ultraviolet filters,
- titanium dioxide,
- polyaniline
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