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. 2021 Jul 31;11(8):259. doi: 10.3390/bios11080259

Figure 3.

Figure 3

(a) Schematic illustration of procedures for Hg2+ detection. Reprinted with permission from Ref. [61], Copyright 2013, Elsevier. (b) Determination of fluoride by functionalized graphene. Reprinted with permission from Ref. [62], Copyright 2013, American Chemical Society.