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. 2015 Dec 10;5:17475. doi: 10.1038/srep17475

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.