fig6
Figure 6. (A) Selectivity of HNU-G4 in mixed metal ion aqueous solution (the concentration of each ion is 20 mg·L-1); (B) Recyclability of HNU-G4.
Figure 6. (A) Selectivity of HNU-G4 in mixed metal ion aqueous solution (the concentration of each ion is 20 mg·L-1); (B) Recyclability of HNU-G4.
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