DOI: 10.3724/SP.J.1249.2017.03322

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:3 PP.322-330

Rapid screening and confirmation of ultraviolet absorbers in textiles

An effective method was established for rapid screening and confirmation of ultraviolet absorbers in textiles by ultra-high performance liquid chromatography/orbitrap high resolution mass spectrometry (UPLC/Orbitrap HRMS) technique. Ultraviolet absorbers in textiles were first ultrasonically extracted using methanol as the extraction solvent. Then, the extract was concentrated and analyzed by UPLC/Orbitrap HRMS. The quantitative analysis was carried out by the peak area in extracted chromatogram, and the concentration of each analyte was calibrated by the external standard method. The chromatographic separation of nineteen ultraviolet absorbers was carried out on a Hypersil Gold column (100 mm×2.1 mm, 1.9 μm) by gradient elution of methanol and water. The mass spectrometry analysis was carried out by Orbitrap HRMS in ESI+ and ESI- modes. Full-scan experiment was carried out in the range for m/z from 100 to 700. The screening and qualitative analysis were carried out by the retention time and the accurate mass of quasi-molecular ion and nineteen ultraviolet absorbers were routinely detected with mass accuracy errors below 2×10-6. The confirmation analysis for target compounds was performed with qualitative fragments obtained by data-dependent scan mode. The limits of quantification varied from 0.01 to 0.50 μg/kg. The blank samples were spiked at three levels, and the average spiked recoveries changed from 82.35% to 94.58% with the relative standard deviation (RSD)-changing from 3.37% to 9.98%. The proposed method was applied in the rapid screening of ultraviolet absorbers in textiles available commercially and UV-327 was detected in one sample.

Key words:analytical chemistry,ultrasonic extraction,textiles,ultraviolet absorbers,ultra-high performance liquid chromatography,orbitrap high resolution mass spectrometry,orthogonal experiment

ReleaseDate:2017-06-16 14:08:46

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