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Table 1 Test results of brass standard sample (SEM–EDS analyses, reported in wt%) [40]

From: Early brass from the Foyemiaowan-Xindiantai cemetery, 265–439 ce: the origin and diffusion of brass in ancient China

Element

Cu

Sn

Pb

Zn

As

Sb

Bi

Ag

Cd

Fe

Mn

Reference value

55.84

0.11

0.58

40.63

0.35

0.17

0.31

0.21

0.5

0.18

0.45

Test value

54.2

0.1

1.1

40.3

0.4

0.1

0.1

0.2

0.6

0.2

0.5

Relative error

− 2.9

− 6.5

91

− 0.8

14.6

− 42.5

− 68.2

− 6.1

19.8

12.4

12.4