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Fig. 5 | Heritage Science

Fig. 5

From: Beneficial effect of gelatin on iron gall ink corrosion

Fig. 5

Mapping of the inked fiber sprayed with gelatin (I_G). a SEM image of the whole section showing three fibers (A–C). b and c STXM maps of the restricted area (yellow square) at Fe-K edge. b Fe K-edge maps at 708 eV (subtracted by maps at 700 eV) related to FeII distribution. c Fe K-edge maps at 709.8 eV (subtracted by maps at 708 eV) related to FeIII distribution. d RGB picture resulting from fit of the F L-edge stack with FeII (yellow) and FeIII (blue) reference spectra of Fig. 1a. e, f, i C K-edge maps at 286.7 eV, 285.2 eV and 288.3 eV (from which maps at 280 eV were subtracted) showing respectively the location of the cellulose fiber, IGI precipitate and gelatin. g RGB picture resulting from fit of the C K-edge stack with fiber (red), IGI (blue) and gelatin (green) reference spectra of Fig. 1a. h N K-edge map at 401 eV (subtracted by maps at 398 eV) highlighting gelatin distribution. j Regions of interest (numbers 8–10) chosen to extract the NEXAFS spectra of Fig. 3c

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