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. 2020 Sep 3;403:123841. doi: 10.1016/j.jhazmat.2020.123841

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Fig. 7 — VOCs adsorption performance of gelatin and β–CD powder, P2 mask and gelatin/β–CD nanofiber mats. (a) Xylene adsorption, the values were obtained using UV spectroscopy at the characteristic wavelength of 268 nm. (b) Benzene adsorption, the adsorbed benzene was extracted using ethanol and analysed by UV spectroscopy at the characteristic wavelength of 255 nm (c) HCHO adsorption performance using formalhydemeter.