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Heavy metal concentrations in rhein-rich extract.
| Heavy metal | Limit of Detection * (mg/kg) |
Permissible Limit (mg/kg) | Observed Values (mg/kg) |
|---|---|---|---|
| As | <0.041 | 5.0 | ND |
| Cd | <0.021 | 0.3 | ND |
| Pb | <0.020 | 10.0 | ND |
| Hg | <0.054 | 0.5 | ND |
* As per limits mentioned in ASEAN guidelines. ND = Not detected; Less than the limit of detection.
