Magnetic hydrogel for the rapid elimination of environmental harmful ions

Abstract

Aqueous solution containing selenium (1 mg/mL), boron (3 mg/mL), fl uorine (3 mg/mL), and arsenic (1 mg/mL), and magnetic hydrogel (15 w/w%) was mixed. After 24 hours of mixing, magnetic hydrogel was removed using magnet (0.5 tesla) for 20 seconds, we measured the concentration of selenium, boron, fl uorine and arsenic. The average concentration of them was 0.009 mg/mL, 0.07 mg/mL, 0.10 mg/mL and 0.004 mg/mL, respectively. Finally, we confi rmed