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Heritage Science
Fig. 9 | Heritage Science

Fig. 9

From: Towards a novel strategy for soot removal from water-soluble materials: the synergetic effect of hydrogels and cyclomethicone on gelatine emulsion-based photographs

Fig. 9

ATR-FTIR spectrum of a non-contaminated area (blanco) compared with spectra of areas cleaned with different cleaning methods. These spectra show no changes in the characteristic peaks and, in addition, they do not exhibit the characteristic peaks of the gels, indicating that no gel residues remain after the cleaning

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