Fig. 6
From: Characterisation and restoration of a severely damaged paper archive from the Qing Dynasty
Pictures of the acidified paper sample (a1) before and (a2) after deacidification using saturated magnesium bicarbonate solution; SEM images of the acidified paper sample (b1) before and (b2) after deacidification using saturated magnesium bicarbonate solution; EDS results of the acidified paper sample (c1) before and (c2) after deacidification; (d) Mg elemental mapping image of the acidified paper sample after deacidification.
