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
0.2
0.6
Relative error
− 2.9
− 6.5
91
− 0.8
14.6
− 42.5
− 68.2
− 6.1
19.8
12.4