Ukoha PO, Ekere NR, Opara IJ. STUDIES ON EXTRACTION OF Co (II) IONS FROM AQUEOUS SOLUTION USING 1,5-DIMETHYL- 2- PHENYL-4-[(E)-(2,3,4-TRIHYDROXYLPHENYL)DIAZENYL]-1,2-DIHYDRO-3H-PYRAZOL-3-ONE. JCSN [Internet]. 2017Feb.11 [cited 2025Nov.14];40(1). Available from: http://www.journals.chemsociety.org.ng/index.php/jcsn/article/view/4