Table 8: THM-Py-GC/MS Results for Amber Object Core & Surface Samples Accession # Sample Location Peak Area Percentages Succinate Diterpenes Fatty Acids core 20 9.6 0.0 surface 4.2 9.1 0.8 core 25 12 0.4 surface 16 4.6 1.6 (cat. no. 19) core 27 11 0.0 surface 11 1.7 1.5 core 34 9.1 0.0 surface 11 2.0 1.5 core 38 8.1 0.3 surface 29 4.3 0.7 core 41 8.0 0.9 surface 12 2.0 1.2 Table 9: THM-Py-GC/MS Results for Treated Amber Objects Accession # Sample Location Treatment Peak Area Percentages Succinate Diterpenes Fatty Acids core drying oil 34 5.2 18 surface drying oil 13 4.6 7.7 core drying oil 29 6.4 6.6 core fatty substance 39 6.2 0.7 surface 23 2.7 8.1 core amber oil, once 72 5.1 0.6 surface 44 7.6 0.4 core amber oil, twice 38 5.6 1.9 core amber oil, three times 54 2.9 0.4 NOTES 3. E. Stout, C. Beck, and B. Kosmowska-Ceranowicz, for example, 1. See N. Kalsbeek and K. Botfeldt, “Identification of Amber and used infrared spectroscopy (IR) to compare and separate Amber Imitations by Infrared Spectroscopy,” Meddelelser om gedano-succinite from succinite: see “Gedanite and Gedano- konservering no. 1 (2007): 3–11. Imitations have included Succinite,” in Anderson and Crelling 1995, pp. 130–48. materials such as Bakelite, nitrocellulose, polystyrene, and plant 4. See J. Waddington and J. Fenn, “Preventive Conservation of resins. Amber: Some Preliminary Investigations,” Collection Forum 4, no. 2. SeeRice 2006 for a discussion of amber and its terminology. 2, (Fall 1988): 25–31; and Y. Shashoua, National Museum of Denmark, 2002, http://www.natmus.dk/cons/reports/2002/ amber/amber.pdf. 282 TECHNICAL ESSAY