Fig. 8: Ca 2p XPS spectra of CaSO4 scales.
From: Nanosilica modified with polyaspartic acid as an industrial circulating water scale inhibitor
a Without scale inhibitor, b with 4 mg/L PASP, c with 4 mg/L SiO2–NH2/PASP.
Fig. 8: Ca 2p XPS spectra of CaSO4 scales. | npj Clean Water
