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. 2021 Apr 7;16:2689–2702. doi: 10.2147/IJN.S301212

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© 2021 Valdez-Salas et al.

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FTIR spectroscopy of the surgical mask fibers with AgNPs at different BC concentrations. (a) 0%, (b) 0.05%, (c) 0.1%, (d) 0.2% and (e) without surfactants.