id	keyword
eurjchem-2139	cobalt
eurjchem-2139	samples
eurjchem-2139	solution
eurjchem-2139	determination
eurjchem-2139	method
eurjchem-2139	water
eurjchem-2139	chemistry
eurjchem-2139	reagent
eurjchem-2139	chittagong
eurjchem-2139	soil
eurjchem-2139	journal
eurjchem-2139	table
eurjchem-2139	salen
eurjchem-2139	european
eurjchem-2139	ahmed
eurjchem-2139	flask
eurjchem-2139	results
eurjchem-2139	rsd