From: Guangzhou Tongcao painting in late China Qing Dynasty (1840–1912 AD): technology revealed by analytical approaches
Weight %
C
O
Al
Si
S
Cl
K
Ca
Fe
Cu
As
Pb
Area
50.6
41.89
0.17
0.32
0.13
0.31
0.49
1.82
2.39
0.26
1.14