Table 3 The chemical formula of the main component(s) in each kind of crude drug obtained by XRD and weight percentage of corresponding main elements determined by SEM–EDS (n = 3, *n = 2)
Crude drug | Component(s) | Element | %weight ± SD |
|---|---|---|---|
Realgar | AsS | As | 54.99 ± 4.54 |
S | 21.76 ± 1.60 | ||
Orpiment | As2S3 | As | 49.57 ± 3.04 |
S | 30.84 ± 1.14 | ||
Chinese powder | CaCO3 | Ca | 30.81 ± 1.20 |
C | 16.21 ± 0.14 | ||
O | 52.98 ± 1.13 | ||
Sen | Pb3O4, PbO | Pb | 80.16 ± 1.13 |
C | 8.74 ± 1.29 | ||
O | 11.10 ± 0.28 | ||
Vermilion* | HgS | Hg | 65.92 ± 0.15 |
S | 22.27 ± 0.17 | ||
Natural vermilion | HgS | Hg | 65.54 ± 2.23 |
S | 22.24 ± 0.85 | ||
Cinnabar | HgS | Hg | 67.49 ± 3.33 |
S | 19.81 ± 4.54 |