Table 2 Mössbauer parameters obtained at room temperature and 4.2 K for the studied historical documents
From: Mössbauer study of iron gall inks on historical documents
Material and assignment | Room temperature spectrum | 4.2 K spectrum | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
IS [mm/s] | QS [mm/s] | B [T] | W [mm/s] | A [%] | IS [mm/s] | QS [mm/s] | B [T] | W [mm/s] | A [%] | |
Chancery MS part with writing | ||||||||||
Iron oxalate | 1.09(1) | 1.73(1) | – | 0.28(1) | 42(2) | 1.08(1) | − 1.96(4) | 15.3(1) | 0.57(1) | 42(1) |
Hydronium jarosite | 0.27(1) | 1.24(1) | – | 0.26(1) | 17(2) | 0.26(1) | − 0.18(1) | 47.8(2) | 0.82(2) | 22(1) |
Ferric iron doublet | 0.27(1) | 0.84(2) | – | 0.67(2) | 41(2) | 0.33(2) | 0.79(2) | – | 0.97(7) | 23(1) |
Ferric iron sextet | 0.28(2) | 0.05(3) | 53.8(2) | 0.58(4) | 5(1) | |||||
Ferrous iron doublet | 1.15 | 2.75(3) | – | 0.69(4) | 8(1) | |||||
Chancery MS paper without ink | ||||||||||
Ferric iron doublet 1 | 0.14(2) | 0.55(4) | – | 0.51(6) | 51(7) | 0.25(2) | 0.82(3) | – | 0,57(4) | 50(3) |
Ferric iron doublet 2 | 0.24(2) | 1.08(3) | – | 0.38(4) | 35(7) | |||||
Ferric iron goethite | 0.26 | − 0.22(8) | 49.1 | 0.25* | 41(3) | |||||
Ferrous iron doublet | 1.0 | 1.87(12) | – | 0.75 | 14(3) | 0.94(13) | 3.6(3) | – | 0.75 | 9(2) |
Latin MS letters with little paper | ||||||||||
Ferric iron | 0.28(1) | 0.79(1) | – | 0.51(1) | 100 | 0.28(1) | 0.81(1) | – | 0.61(1) | 59(1) |
Ferric iron | 0.29(1) | 0.10(1) | 52.1(5) | 0.25* | 6(1) | |||||
Ferric iron | 0.26 | 0.0 | 26(1) | 0.25* | 34(3) | |||||
Ferrous iron | 1.16 | 2.60 | – | 0.25* | 1.1(5) | |||||
Latin MS paper without ink | ||||||||||
Ferric iron doublet | 0.22(2) | 0.77(3) | – | 0.64(3) | 66(2) | 0.27(1) | 0.77(1) | – | 0.72(2) | 52(2) |
Hematite | 0.25(2) | − 0.25(4) | 50.6(2) | 0.54(8) | 20(2) | 0.26 | − 0.11(3) | 53.3(2) | 0.47(8) | 15(5) |
Ferric iron(goethite) | 0.26(1) | − 0.18(3) | 49.7(5) | 0.25* | 23(5) | |||||
Ferrous iron | 1.14(9) | 2.52(20) | – | 0.77(12) | 14(2) | 0.98(3) | 2.85(6) | – | 0.50 | 10(2) |
Cookbook pages 50–70 | ||||||||||
Ferric iron | 0.26(1) | 0.75(1) | – | 0.49(1) | 100 | Not measured | ||||
Cookbook single page cut | ||||||||||
Ferric iron | 0.27(1) | 0.77(1) | – | 0.45(1) | 100 | 0.28(1) | 0.80(1) | – | 0.56(1) | 34(1) |
Ferric iron (lepidocrocite) | 0.25(1) | − 0.16(1) | 45.0(1) | 0.25 | 29(1) | |||||
Ferric iron | 0.26 | 0 | 52 | 0.25* | 4(1) | |||||
Ferric iron | 0.26 | 0 | 32(1) | 0.25* | 32(2) | |||||
Ferrous iron | 1.01(3) | 2.87(6) | – | 1(1) | ||||||
Cookbook paper only | ||||||||||
Ferric iron | 0.12(3) | 0.70(3) | – | 0.63(4) | 100 | 0.22(3) | 0.88(5) | 0.42(7) | 52(6) | |
Ferric iron | 0.26 | 0.21(1) | 51.0(6) | 0.25* | 48(6) | |||||
Iron oxalate | ||||||||||
Ferrous iron | 1.09(1) | 1.74(1) | – | 0.25(1) | 100 | 1.09(1) | − 1.94(1) | 14.9(1) | 0.27(1) | 100 |
Hydronium Jarosite | ||||||||||
Ferric iron | 0.27(1) | 1.25(1) | – | 0.29(1) | 89(1) | 0.24(1) | − 0.13(1) | 48.5(2) | 0.38(2) | 78(1) |
Ferrous iron | 1.17(3) | 2.27(3) | – | 0.55(5) | 11(1) | 1.14(1) | 3.14(2) | – | 0.25 | 22(1) |