How are heavy metals and pesticide residues tested in this Chuanxiong rhizome oil?
Heavy metals are quantified by atomic absorption spectrometry (AAS) or ICP-MS, and pesticide residues are screened per GB 2763 limits.
Safety Testing
| Parameter | Limit | Method |
|---|---|---|
| Lead (Pb) | ≤10 mg/kg (product spec); ≤5 mg/kg tightened to ChP 2025 herb level on request | AAS / ICP-MS |
| Cadmium (Cd) | ≤1 mg/kg | ICP-MS |
| Arsenic (As) | ≤2 mg/kg | AAS (hydride) / ICP-MS |
| Mercury (Hg) | ≤0.2 mg/kg | AAS (cold vapor) |
| Copper (Cu) | ≤20 mg/kg | AAS / ICP-MS |
| Pesticide residues | Complies with GB 2763 | GC-MS/MS multi-residue screen |
| Aflatoxin B1 | ≤5 μg/kg (T/CNHFA 111.28—2024) | HPLC-FLD |
- The standards report recommends tightening product Pb from ≤10 to ≤5 mg/kg to fully align with the ChP 2025 medicinal-herb level — we can apply the stricter limit at no extra cost
- Test results are printed on the batch COA; original chromatograms/spectra are available on request
- Raw rhizomes are sourced from Dao-di Sichuan growers with pesticide-use control records
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This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.
