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Table 3 Normalized major element contents of the glass standards (LA-ICP-AES) (wt%)

From: The chemical composition and manufacturing technology of glass beads excavated from the Hetian Bizili site, Xinjiang

  Na2O MgO Al2O3 SiO2 P2O5 K2O CaO Fe2O3
Corning-d
 Average 1.38 3.99 5.73 53.98 4.05 12.41 15.24 0.55
 RSD % 1.56 0.78 1.33 0.28 2.80 1.95 1.03 1.96
 Reference composition wt% 1.20 3.94 5.31 55.24 3.93 11.30 14.80 0.52
 Absolute error wt% 0.18 0.05 0.42 − 1.26 0.12 1.11 0.43 0.03
 Relative error % 14.92 1.17 7.82 2.28 3.00 9.78 2.94 5.96
Corning-b
 Average 16.14 1.06 4.61 62.68 0.90 0.95 9.01 0.39
 RSD % 0.24 0.05 0.57 0.13 1.16 2.28 0.74 1.76
 Reference composition wt% 17.00 1.03 4.36 61.60 0.82 1.00 8.56 0.34
 Absolute error wt% − 0.86 0.03 0.25 1.08 0.08 − 0.06 0.45 0.05
 Relative error % 5.04 2.91 5.62 1.75 9.88 5.50 5.22 14.41