Hi everyone,
Thank you very much for your time to look at my question!
On the IHSS (international humic substances society) website, filtration over a 0.2µm filter to remove the remaining mineral fraction/clays is suggested to be a replacement for the HF/HCl, but I could not really find anything about it in the literature.
Do you perhaps know any reference regarding using filtration to replace HF-HCl to remove clays when extracting humic acid from the soil?
Thank you very much in advance!
Best,
Jiaoyi
Hi Jiaoyi,
You could try with this research article:
- Article Isolation and purification treatments change the metal-bindi...
Best,
Uros
I would expect that colloidal sized particulates would pass a filter of this pore diameter. It's easy to try -- do the analysis on some filtrates
Hi all,
Thanks a lot for the answers. That is very kind of you all.
But I might not make myself clear. I am not that interested in the effect of HF/HCl treatment. I am actually looking for some reference to support the replacement of HF/HCl application by filtration to remove minerals during the process of extracting HA from soil (this replacement is suggested on IHSS website (https://humic-substances.org/isolation-of-ihss-soil-fulvic-and-humic-acids/) but I couldn't find the evidence in papers.)
If you have any information you could offer on my question, that would be much appreciated. Thank you very much in advance!
Best,
Jiaoyi
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