Benzeneacetaldehyde-4-hydroxy- α -oxo-aldoxime as a new analytical reagent for the spectrophotometric determination of cobalt

Spectrophotometric Study of Cobalt (II) Chlorocomplexes in Methanol in the Visible Domain

“…The exploitation of experimental spectra in the visible region showed the absence of [CoCl 4 ] -2 . The testing of models with the program Sirko on chloride solutions C ≤ 0.6 mol L -1 (domain1) shows that the model [1,2] is favored over [1,2,3]. On the other hand, for all solutions (domain2), [1,2] [1, 2 [34], and this discrepancy is probably due to the ionic strength which was maintained constant in that work.…”

“…For the calculation, we tested several models in different range of concentrations and only two were retained, namely: domain 1, for the first 6 solutions, and domain 2 which includes the whole set of 12 solutions. No satisfactory results were found for models [1,3], [2,3] and [1,2,3,4], that is, respectively the model with the monoand the tri-choloro complex, the di-and the tri-chloro complex, and the mono-, di-, tri-and tetrachloro complex. The obtained results for models [1,2] and [1,2,3]…”

“…No satisfactory results were found for models [1,3], [2,3] and [1,2,3,4], that is, respectively the model with the monoand the tri-choloro complex, the di-and the tri-chloro complex, and the mono-, di-, tri-and tetrachloro complex. The obtained results for models [1,2] and [1,2,3]…”

“…Complexes are involved in several basic processes such as hemoglobin or vitamin B 12 [1][2][3][4][5][6][7], which are respectively iron and cobalt complexes [8,9]. Formation of octahedral and tetrahedral cobalt(II) complexes is known from solid state studies [10].…”

A Sensitive and Simple Extractive-Spectrophotometric Method for the Determination of Microgram Amount of Cobalt by Using α-Benzilmonoxime

“…Malve and coworkers 14 have reported benzeneacetaldehyde-4-hydroxy-α-oxo-aldoxime as being an analytical reagent for cobalt determination. Another study was also reported by stratis 15 based on a synergetic effect of 2-benzoylpyridine-2-pyridyl hydrazone and thiocyanate ions on the extraction and determination of cobalt.…”