How to remove toxic heavy metal traces like mercury, lead, cadmium etc. from solid herbal material or food material?
is there any specific methodology or technique to remove metal traces from solid material like food or plant herbal material?
so that after removal of metal, the solid material can be used as food or medicine.
Removing heavy / toxic metals from food is already a difficult job, see for example the publications below, also in Research Gate. Using these materials again as food is even more difficult but maybe these publications can give you a clue
' ANALYSIS OF REMOVAL METHODS OF TOXIC HEAVY METALS USING BIO-ABSORBS ' DOI: 10.5281/zenodo.1402587
or
The Extraction of Heavy Metals From Vegetable Samples
- January 2017 DOI: 10.1016/B978-0-12-811521-3.00006-5
Food or food additives should not be contaminated (or should be below the respective threshold) in the first place. So, I don't think the question of removal of such contaminants and use of such food product arises.
Solid herbal material or food material when manufactured, their composition already analyzed including its metals content , so there are no toxic metals exist to the composition of Solid herbal material or food material.
Normally, heavy metals removal processes are bio accumulation and bio-absorption, by plants .
I studied on bio accumulation and bio-absorption of heavy metals by seaweeds. It shows seaweeds actively bio accumulate and bio-absorb of heavy metals from water and sediment.
Other literature reports regarding bio accumulation and bio-absorption of heavy metals other plants.
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