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. 2021 Mar 18;16(3):e0241729. doi: 10.1371/journal.pone.0241729

Fig 2.

Fig 2

(a) UV–vis spectra of aqueous silver nitrate concentration. (b) Concentration ratio of Mang Mao extract with 1 mM silver nitrate. (c) Different pH range. (d) Different time intervals.