id	keyword
eurjchem-2550	extraction
eurjchem-2550	ions
eurjchem-2550	cu(ii
eurjchem-2550	pb(ii
eurjchem-2550	pbbmor
eurjchem-2550	chemistry
eurjchem-2550	metal
eurjchem-2550	agents
eurjchem-2550	acid
eurjchem-2550	journal
eurjchem-2550	complex
eurjchem-2550	potassium
eurjchem-2550	crystal
eurjchem-2550	effect
eurjchem-2550	european