Table 3. Toxic heavy metals detected in the traditional Chinese medicine (TCM) samples tested in this study.
| AUST L TCMs | Heavy Metal Detected |
||
|---|---|---|---|
| Arsenic | Lead | Cadmium | |
| 2 | ++ | ++ | ++ |
| 3 | + | ++ | |
| 6 | + | + | |
| 7 | ++ | ++ | ++ |
| 8 | + | ++ | |
| 9 | + | + | |
| 11 | ++ | ++ | ++ |
| 12 | ++ | ++ | ++ |
| 15 | +++ | + | |
| 22 | + | ||
| 23 | + | + | ++ |
| Non Listed TCMs | |||
| 1 | + | ++ | ++ |
| 4 | +++ | +++ | ++ |
| 5 | ++ | ++ | |
| 13 | ++ | +++ | +++ |
| 16 | ++ | + | |
| 19 | ++++ | ++ | + |
| 24 | ++ | ++ | |
| 25 | ++ | ++ | +++ |
| 26 | ++ | ++ | +++ |
Of the 25 TCMs screened using SF-ICP-MS, those appearing in the table below were found to contain the toxic metals arsenic, lead or cadmium in varying quantities.
+ At or less than two times the TGA limit for medicines (based on 60 kg person; 1.2 μg/daily dose arsenic, 2.2 μg/daily dose lead, 0.22 μg/daily dose cadmium). ++ Greater than two times the TGA limit for medicines. +++ Greater than 10 times the TGA limit for medicines. ++++ Much greater than 10 times the TGA limit for medicines.