Fig. 4From: Elucidating the phytotoxicity thresholds of various biosynthesized nanoparticles on physical and biochemical attributes of cottonFTIR (Fourier transmission infrared spectroscopy) spectra of a plant extract b zinc oxide nanoparticles (A), a plant extract b iron oxide nanoparticles (B), a plant extract b copper nanoparticles (C), and silver nanoparticles (D)Back to article page