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Table 1 The analytical results of the concretions of different samples by μ-XRF (wt %)

From: The method to soften the concretions of ceramics in the “Nanhai I” Shipwreck of China Southern Song Dynasty (1127–1279AD)

Samples wt%
Na2O MgO Al2O3 SiO2 SO3 K2O CaO TiO2 Cr2O3 MnO Fe2O3 CuO
N1-1grey 1.86 9.14 12.18 62.48 1.74 1.29 6.53 0.73 0.09 0.13 3.71 0.03
N1-1white 1.78 5.76 3.59 10.77 0.39 0.57 75.53 0.15 0.06 0.11 0.95 0.06
N2-1white 1.28 3.14 1.03 1.19 1.20 0.43 89.10 0.03 0.08 0.17 1.26 0.08
N2-1red 1.60 13.83 6.43 30.81 7.46 0.26 3.92 0.19 0.11 0.34 34.76 0.15
N3-1white 2.65 4.94 1.35 4.95 2.38 0.42 81.75 0.01 0.05 0.02 1.12 0.01
N3-1red 3.61 2.07 7.04 32.50 6.45 1.52 2.16 0.23 0.15 0.31 43.82 0.04
N4-1white 0.82 7.77 1.49 4.40 1.85 0.64 72.78 1.00 0.04 0.17 7.64 0.03
N5-1grey 2.31 3.12 7.41 68.26 4.39 0.83 7.99 0.53 0.08 0.19 4.51 0.12
N5-1white 1.42 6.58 2.28 14.06 3.12 0.51 68.12 0.06 0.06 0.29 3.05 0.05
N5-1red 1.77 5.34 3.82 11.20 4.61 0.39 21.30 0.23 0.12 0.39 50.18 0.02
N6-1red 1.67 0.65 5.26 18.65 1.62 0.52 0.94 0.24 0.11 0.72 69.51 0.02
N8-1white 0.54 1.69 1.88 10.60 7.61 0.52 56.84 0.25 0.12 0.22 19.21 0.03
N8-1red 4.20 2.29 4.82 19.22 24.82 0.48 7.90 0.20 0.19 0.28 35.47 0.04
N10-1red 2.27 1.98 4.53 31.18 5.37 0.80 1.58 0.33 0.14 0.22 51.18 0.04
N11-1red 9.50 8.67 7.90 6.99 19.73 0.04 0.33 0.09 0.13 0.28 46.27 0.01
N12-1white 1.11 13.33 4.61 29.29 5.08 0.81 40.81 0.22 0.04 0.11 4.37 0.01
N12-1red 1.85 5.24 1.59 20.42 19.58 0.45 22.17 0.14 0.12 0.30 27.88 0.03
N13-1red 1.46 1.40 14.72 40.64 2.28 2.57 0.58 1.00 0.06 0.11 34.96 0.05
N14-1grey 1.13 9.10 3.50 65.20 1.99 1.11 15.32 0.19 0.08 0.08 1.93 0.04
N14-1white 2.97 10.16 3.52 11.69 0.69 1.58 57.69 0.71 0.08 0.56 9.71 0.03
N14-1red 2.05 20.04 10.14 49.94 1.66 1.95 0.99 0.53 0.03 1.32 11.22 0.03
N15-1white 3.95 6.01 5.19 22.35 2.45 0.98 51.12 0.32 0.08 0.23 5.92 0.07
N15-1red 3.83 1.83 2.97 10.42 5.81 0.11 5.32 0.17 0.12 0.38 68.77 0.08
N16-1grey 1.33 1.82 2.9 72.65 9.78 0.60 7.11 0.26 0.03 0.08 3.20 0.12
N16-1white 1.34 5.40 5.75 22.32 2.59 1.23 51.31 2.16 0.08 0.16 7.25 0.08
N16-1red 2.49 6.27 10.65 44.57 7.75 1.78 8.99 0.60 0.06 0.24 16.41 0.06
N17-1white 2.33 3.14 10.72 57.50 7.62 3.07 7.21 0.20 0.04 0.21 7.69 0.03
N17-1red 2.50 1.75 7.07 27.03 10.64 1.45 1.07 0.26 0.13 0.24 47.39 0.05
N18-1white 1.72 3.94 3.37 9.55 2.53 1.03 67.69 0.32 0.04 0.30 7.67 0.04
N19-1grey 2.82 6.84 5.53 60.80 2.25 1.21 16.58 0.09 0.04 0.10 3.54 0.03
N19-1white 0.42 6.79 6.22 24.61 3.57 3.11 46.35 0.44 0.05 0.18 7.76 0.09
N20-1grey 1.17 9.20 13.97 61.45 1.82 3.49 4.07 0.57 0.02 0.22 3.88 0.02
N20-1white 1.51 8.56 1.67 4.54 0.46 0.59 77.70 0.33 0.03 0.65 3.63 0.02
N21-1grey 1.82 1.58 2.54 86.67 1.41 0.16 4.86 0.05 0.02 0.19 0.46 0.01
N21-1white 0.69 3.03 4.52 10.02 0.72 1.43 73.32 0.41 0.07 0.24 3.91 0.12
N22-1grey 1.58 7.32 11.56 51.38 6.14 1.87 13.44 0.63 0.07 0.18 5.6 0.07
N23-1white 10.87 6.11 1.52 1.83 15.73 0.16 61.46 0.03 0.04 0.23 1.71 0.02
N23-1red 1.02 7.12 1.255 2.72 22.89 0.31 54.14 0.04 0.07 0.26 9.71 0.01
N24-1grey 1.96 9.57 10.88 62.93 7.09 1.53 1.87 0.41 0.06 0.48 3.11 0.02
N25-1white 0.93 3.58 2.64 6.63 14.60 0.39 58.68 0.10 0.07 0.23 11.66 0.03
N25-1red 8.98 0.095 17.73 24.66 0.09 3.93 0.09 0.13 0.44 43.50 0.04
N26-1grey 3.75 17.35 6.37 49.53 3.42 0.62 14.80 0.31 0.08 0.15 3.24 0.09
N26-1white 4.84 11.89 5.06 33.82 6.43 0.62 34.06 0.28 0.08 0.46 2.05 0.06
N27-1grey 3.37 9.30 11.39 62.13 1.96 2.23 6.67 0.30 0.06 0.05 2.40 0.03