title: Spectrophotometric determination of Co(II) by means of dithiosemicarbazone of  , -dioxobutane- ,  -dicarboxylic acid diethyl ester.
mesh_terms: D003035:Cobalt; D012664:Semicarbazones; D013053:Spectrophotometry; D013882:Thiosemicarbazones
chemical_list: D012664:Semicarbazones; D013882:Thiosemicarbazones; D003035:Cobalt