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FitzarrMed Chem•

Suggest either use of acetate or HCl as per this paper:

https://pubs.acs.org/doi/pdf/10.1021/es702420h

Acid would also have the benefit of protonating your amine which may reduce affinity for the copper. Alternatively, you could use another existing ligand (like EDTA) to attempt to out-compete your amine.

6
farmch•

OP stated in the comments of the other post that it’s acid sensitive. EDTA might be the way to go.

3
BunBun002Organic•

Out-competing with a different ligand usually does the trick. EDTA could do wonders for you. Ammonia might also work well (this is what I use when I have a similar problem).

3
synchemist•

For me aq NH4OH and extract with an organic solvent does the trick really well.

2
boofwad•

Depending on the Cu(II) and the complex that it's apart of, I would either wash with a 10% HCl solution or ion exchange and precipitate out complex in a solution that the amine isn't soluble in.

0