Fig. 9: Ca2p XPS spectra of CaCO3 scales.
From: Nanosilica modified with polyaspartic acid as an industrial circulating water scale inhibitor
a Without scale inhibitor, b with 30 mg/L PASP, c with 30 mg/L SiO2–NH2/PASP.
Fig. 9: Ca2p XPS spectra of CaCO3 scales. | npj Clean Water
